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CODING-DECODING

A code is a signal. Coding has always been used to transmit messages in such a way that they are not ordinarily understood unless these are decoded. These messages can only be understood by the receiver if he has the ‘Code Key’ to decipher it. Thus, the ‘CODING DECODING’ test is given to judge the candidate’s ability to decipher the rule applied in coding. The coding is generally based on a alphabets and some times numerals are also used to code the messages. Though, all the methods of coding can not be identified but still the major formats of coding are as under :

Coding and Decoding can be classified into following types :

1. Coding based on Alphabet

2. Coding based on Numerals

3. Coding based on symbols and numerals :

4. Coding based on ‘Group of Words’

5. Coding based on Reasoning

TYPE 1 : CODING BASED ON ALPHBAET

1.1 Reversal of alphabets:

The alphabets of the word are reversed in such a way that the last letter is the code of the first letter. It is the easy format of the coding and it is the first thing to be looked when we look at coding. .

Ex. 1. In certain code language BREAKDOWN is written as NWODKAERB. How will TRIANGLES be written is that code language ?

(a) AIRTGNSEL (b) SELGWTRIA (c) AIRTNSELG (d) SELGNAIRT (e) None of these

Sol. The order of letters has been reversed in code. Following the coding given above, TRIANGLES will be coded as SELGNAIRT.

1.2 Opposite Letters:

Ex. 2. In certain code COMBINE is written as XLNYRMV which of the following represents FLOWER in that code.

(a) UOLDVI (b) UOLENT (c) UOKDNH (d) UOKDNI ;

Sol. A persual of the word COMBINE and its coded word XLNYRMV combine with knowledge. We know X is opposite letter of C, L is opposite of O, N is opposite of M and so on. It shows that the coded word contains all the opposite letters. Keeping this is view, we know that FLOWER will be coded as UOLDVI.

1.3 Code Consisting of Precoding/Following Letter

Ex.3. In certain code language, “TEMPORARY” is written as “SFLQOQBQZ”. How would

“WONDERFUL” be written in the same code ?

(a) VPMEFQGTM (b) VPMEESGTM (c) XPMEEQGTM (d) VPMEESEVK (e) None of these

Sol.

We observe that letters are alternatively moved one place forward and one place backward and the letter in the middle of the given word is not changed. Based on this observation we coded the word “WONDERFUL” as “VPMEEQGTM”. Therefore, answer is (e).

1.4 Jumbling of Letters

Ex. 4. In certain code language AUTHORITY is written as ‘YTUROHTIA’. How will DESIGNATE be

written is that code language ?

(a) ESENGATDI (b) ESEGNITAD (c) ESENGITAD (d) ESNEIGTDA (e) None of these

sol.

Therefore answer is (C).

Ex. 5. If HEALING is written as BFIKHOJ. How is BEDTIME written in that code?

(a) EFCSTNF (b) EFCSFNJ (c) EFCOFNS (d) CFESFNJ (e) None of these

Sol.

therefore, the answer is (b)

1.5 Using additional alphabet

Ex.6. In 4-certain code DELHI is written as CEDFKMGIHJ. How is KOLKATTA written in that code ?

(a) JLNPKMJLZBSUSUZB (b) JLPNKMJLZBSUSUBZ

Sol. We can observe that there are five letters in the word Delhi and it is coded in ten letters. It means two letters has been used for every one letter used in the word ‘Delhi’. It can also be easily observed that for the letter D two letters C and E have been used. Similarly for the letter E the letter used are D and F. From this, we can conclude that preceding and succeeding letters have used code each leter.

Following this pattern of coding, we can code :

KOLKATTA as JUNPKMJLZBSUSUZB

Ex.7. In certain code PENCIL is written as OQDFMOBDHJKM then how is CHENNAI written as?

(a) BDGDIFMOMOZBHJ (b) BDGIDFMOMOZBJH

(e) None of these

Sol. The given word pencil contains 6 letters and it-is coded with twelve letter word. It means for every given letter, two letters (viz proceeding and succeeding) have been used for coded form following this pattern, Chennai will be coded as BDGIDFMOMOZBHIJ

1.6 Reducing two alphabets to one word

Ex. 8. If GAMBLE is coded as HOQ, how is DOCTOR coded in that language ?

(a) SXG (b) SWH (c) SWF (d) SWG (e) None of these

Sol. The place value of G is 7 and the place value of A is 1. Then total of their place value Is 8 which is presented in the alphabet series. Similarly, place value of M is 13 and B is 2 then the sum is 15 which is represented by O. The place value of L and E is 12 and 5 respectively and their sum total is 17 which is represented by Q in the alphabet series. So the coded word is HOQ. Similarly we can code DOCTOR as under :

D O C T O R

4 15 3 20 15 18

4+5=19, 3 + 20 = 23, 15 + 18=33 =33-26=7

S W G

Therefore, the code is SWG

Ex.9. In certain code DOLLAR is written as S X S. How is INDUSTRIAL written in that code ?

(a) EGCID (b) EGDID (c) EGDIC (d) EIGCD (e) None of these

Sol. The place value of D is 4 and the place value of O is 15. Their sum is 19 which is represented by S. The place value of L is 12 so 12 +12 = 24 which is represented by X. Similarly the place value of A is | and place value of R is 18 and their sum is 19. The leters represents the 19th place value in alphabet series so both these letters are coded as a single letter S. ,

D O L L A R

4 15 12 12 1 18

19 24 19

S X S = SXS

following this coding, INDUSTRIAL can be coded as WYMAM.

1.7 Given two words and to find code for third

Ex. 10. If the word ‘NUMBER’ is coded as ‘EPRSAY’ and ‘SQUARE’ is coded as ‘NGPVYA’ then how doed code ‘MEMBER?’ ?

(a) RARSYA (b) RRASYA (c) RARSAY (d) SARSAY (e) None of these

Given letter Coding Given letter Coding

N à E, S à N

U à P Q à G

M à R U à P

B à S A à V

E à A R à Y

R à Y E à A

If we observe from the above table, M is coded as R, E is coded as A, B is coded as S. so the answer IS

RARSAY.

Ex.11. In a certain code lLinguage, RUSTICATE is written as QTTUIDBSD, how would STATISTIC be written in that code?

(a) RSBUJTUHB (b) RSBUITUHB (c) RSBHUIRSJD (d) TUBUITUMB

Sol. Clearly, the middle letter ofthe word remains unchanged in the code. Each of the first two and the last two letters of the word is moved one step backward, while each of the remaining letter is moved one Step forward to obtain the corresponding letters of the code.

so, the answer is (b).

Ex. 12. In certain code, BREAKTHROUGH is written as EAQUHRBRGHKT. How is DISTRIBUTION written in that code ?

(a) TISTBUONDIRI (b) STTIBUONRIDI (c) STTIBUDIONRI (d) RISTTIBUDION

(e) None of these

Sol.

PRACTICE TEST -1

1. Is in certain code, GLAMOUR is written as IICNMWP and MISRULE is written as OGUSSNC,

then how will TOPICAL be written in that code ?

(a) VMRJECN (b) VMRHACJ (c) VMRJACJ (d) VNRJABJ (e) None of these

2. If TRUTH is coded as SUQSTVSUGI, then the code for FALSE will be

(a) EGZBKMRDE (b) EGZKMRTDF (c) EGZBKMRTDF (d) FGZBKNRTDF

3. In a certain code, CALANDER is written as CLANAEDR. How is CIRCULAR written in that code ?

(a) ICCRLURA (b) CRIUCLRA (c) ICRCLUAR (d) CRIUCALR

4. In a certain code language, ORIENTAL is written as MBUOFJSP. How is COWARDLY written in that code language ?

(a) XKCQBXPD (b) XLBQCXPD (c) ZMESDPXB (d) ZMDSEPXB 7 (e) None of these

5. In a certain code language, CREATIVE is wrtten as BDSBFUJS. How is TRIANGLE written in

that code ?

(a) BHSSFKHM (b) BHSSMHHF (c) BSHSFHKM (d) BSSHFMKH (e) None of these

6. Ina certain code, RAIL is written as KCTN and SPEAK is written as CGRUM. How will AVOID be written in that code ?

(a) FKQXC (b) KQXCF (c) KRXCF (d) KQVCB (e) None of these

7. Ina certain code language, OMNIPRESENT is written as QJONPTSMDRD. How is CREDIBILITY written in that code ?

(a) DSFEJDDXSHKH (b) JEFSDCXSHKH (c) JEFSDDXSHKH (d) JEFSDDZUJMJ

(e) None of these

8. In a code language, DISTANCE is written as IDTUBECN and DOCUMENT is written as

ODDVNTNE. How is THURSDAY written in that language ?

(a) DIVSTEYA (b) HTTQRYAD (c) HTVSTYDA (d) HTVSYADS (e) HTVSTYAD.

9. In a certain code BRAIN is written as *%+#X and TIRE is written as $#%+. How is RENT is

written in that code.

(a) %X#S (b) %#X$ (c) %+X$ (d) +X%$ (e) None of these.

10. In a certain code ORDER is written as X+S#+ and BOARD is written as *X%+S. How is ABODE is written in that code.

(a) %*X$# (b) *X%$# (c) %*X$÷ (d) ÷*X$#; (e) None of these.

11. In a certain DEAF is written as 3587 and FILE is written as 7465. How is IDEAL written in that code ?

(a) 43568 (b) 43586 (c) 63548 (d) 48536 (e) None of these.

12. If in a code language PAINT is written as 74128 and EXCEL is written as 93596 then how will ACCEPT be written in that language ?

(a) 455978 (b) 544978 (c) 554978 (d) 733961.

13. If in a certain code language PREMONITION is written as 68530492904. How will the word MONITOR be written in that code language ?

(a) 1234567 (b) 3029408 (c) 3049208 (d) 3049258 (e) None of these.

14. Inacode language, SOLID is written as WPSLPIMFHA. What does the code word ATEXXQIBVO refer to ?

(a) WATER (b) WAGER (c) EAGER (d) WAFER

15. If in a certain language, ITNIETAM is code for INTIMATE, which word has the code TREVNIETARBI ?

(a) INVRETIBRATE (6) INVERTIBARTE (c) INVERTIBRETA (d) INVERTIBRATE

(e) INVERITBARTE

16. If in a certain code, ALMIRAH is written as BNPMWGO, which word would be written as

DNRWLUA ?

(a) COSGOLT (b) TOGSOLC (c) TOGCLOS (d) CLOSGOT (e) COLSTOG

17. If REQUEST is written as S2ZRS2TU, then how will ACID be written ? :

(a) 1394 (b) 1C94 (c) BDJE (d) B3J4 (e) None of these.

18. Ifeach of the letters in English alphabet is assigned odd numerical value beginning A= 1, B=3 and so on, what will be the total value of the letters of the word INDIAN ?

(a) 86 (b) 88 (c) 89 (d) 96 (e) None of these.

19. If DEER = 12215 and HIGH = 5645, how will you code ‘HEEL’ ?

(a) 2328 (b) 3449 (c) 4337 (d) 5229.

20. If WORK is coded as 4-12-9-16, then how will you code WOMAN ?

(a) 4-12-14-26-13 (b) 4-26-14-13-12 (c) 23-12-26-14-13 (d) 23-15-13-I-I4

(e) None of these.

ANSWERS

1. (c) 2. (c) 3. (d) 4. (e) 5. (a) 6 (b) 7.(c) 8. (e) 9.(c) 10. (a)

11. (b) 12. (a) 13. (c) 14. (a) 15. (d) 16 (d) 17.(e) 18. (d) 19.(d) 20. (a)

TYPE 2 : CODING BASED ON NUMERALS AND SYMBOLS

Ex. 1. 1f 24685 is coded as RKANO, 37912 is coded as BPSTR then how 7868143 will be coded ?

(a) PANATBK (b) PNANTKB (c) PNANTBK (d) PANBTNK (e) None of these.

Sol. As noted above we draw chart as under :

Coded: 2 4 6 8 5

Code : R K A N O|

and

Coded : 3 7 9 1 2

Code : B P S T R .

Because 7 is coded as P, 6 is coded as A, 8 is coded as N, I is coded as 7, 4 is coded as K and 3 is coded as B. The answer is PNANTKB. Hence option (b) is the answer.

Ex.2. In a certain code, ‘SPRING’ is written as ‘#2%@4=’ and ‘GONE’ is written as ‘=74(c)’. How would SIGN be written in the same code ?

(a) #@4 = (b) 2@=4 (c) #@=4 (d) #%=4 (e) None of these.

Sol. S P R I N G

# 2 % @ 4 =

and

G O N E

= 7 4 (c)

Therefore, .

S I G N :

# @ = 4

Hence option (c) is the answer.

Ex.3. If MACHINE is coded as 19-7-9-14-15-20-11, how will you code DANGER ?

(a) 11-7-20-16-11-24 (b) 13-7-20-9-11-25 (c) 10-7-20-13-11-24 (d) 13-7-20-10-11-25

Sol. Clearly, every letter is assigned a numerical code obtained by adding 6 to the numeral denoting the position of that letter in the English alphabet.

Thus, A is coded as (1 + 6) i.e., 7, Bas (2+ 6) ie, 8,Cas(3 +6) ie, 9, ……M as (13 + 6) ie, 19,…….Z as (26 + 6) re., 32.

Since D, A, N, G E, R are 4th, Ist, 14th, 7th, 5th and 18th letter in English alphabet, so their respective codes are (4 + 6), (1 + 6), (14 + 6), (7 + 6), (5 +6), (18+ 6) ie. 10, 7, 20, 13, 11, 24. So, the code for DANGER is 10-7-20-13-11-24 Hence, the answer is (c).

Ex.4. If E = 5, PEN = 35, then PAGE = ?

(a) 27 (b) 28 (c) 29 (d) 36

Sol. Clearly, putting A= 1,B=2,C =3, D=4, E=5,……M=13…… X =24, Y=25, Z=26.

We have :

PEN=P+E+N=16+5+14=35 So PAGE=P+A+G+E=16+1+7+5=29 Hence, the answer Is (c) .

Ex. 5. In each of the questions below, a group of numerals is given followed by four groups of symbols/letter combinations labelled (a), (b), (c) and (d). Numerals are to be coded as per the codes andconditions given below.

You have to find out which of the combinations (a), (b), (c) and (d) is correct and indicate your answer accordingly. If none of the four combinations represents the correct code, mark (e) as your answer.

Numerals : 3 5 7 4 2 6 8 1 0 9

Letter/Symbol Codes : * B E A @ F K % R M

Following conditions apply :

(i) Ifthe first digit as well as the last digit is odd, both are to be coded as ‘X’.

(1i) Ifthe first digit as well as the last digit is even, both are to be coded as ‘$’.

(ill) Ifthe last digit is 0, it is to be coded as ‘#’.

1. 5901832 .

(a) BMRK*# (b) BMR%K*@ (c) BMR%K*E (d) BAFK*X (e) None of these.

2. 713540

(a) E%*BA# (b) X%*BA# (c) X%*BAR (d) E%*BAR (e) None of these.

3. 765082

(a) XFBRK@ (b) EFB#K@ (c) EFBR#K (d) EEBRK@ (e) None of these.

4. 487692

(a) AKEFM@ (b) $KEFM@ (c) AKEFM$ (d) $KEFM$ (e) None of these.

5. 364819

(a) XFAK@M (b) *FAK%X (c) *FAK%M (d) *EAK%X (e) None of these.

Sol.

The required code is BMR%K* Hence, the answer ts (b).
2. The last digit in the given number group is 0, which shall thus be coded as #, Choosing the individual codes for the remaining digits from the given table, we obtain the code for 713540 as E%* BAF. ,
Hence, the answer ts (a). .
3. Clearly, each digit of the given number-group is to be coded by its individual letter/symbol code. :
So, the required code is EFBRK@. Hence, the answer is (d).
4. Clearly, in the given number-group, both the first and last digits are even numbers. So, Each of them is to be coded as $. The remaining digits are to be coded with their respective codes from the given table. So, the required code is $KEFM$. Hence, the answer ts (d).
5. The first and last digits, both being odd numbers, each of them is to be coded as X so required code is XFAK%X. Hence the answer ts (e).

TYPE 3 : CODE CONSISTING OF A GROUP OF WORDS

SOLVED EXAMPLES

Ex.1. Ina certain language, ‘Oka peru’ means ‘fine cloth’ ; ‘meta lisa’ means ‘clear water’ and ‘done lisa peru’ means ‘fine clear weather’, which word in the language means weather ?

(a) peru (b) oka (c) meta (d) done.

Sol. In the first and third statements, the common code-word is ‘peru’ and common word is ‘fine’. So, ‘peru’ means ‘fine’. In the second and third statements, the common-code-word is ‘lisa’ and the common word is ‘clear’. So, ‘lisa’ means ‘clear’. ’

Thus, in the third statement, ‘lisa’ means ‘clear’ and ‘peru’ means ‘fine’. So, ‘dona’ means ‘weather’. Hence, the answer ts (d).

Ex.2. In a certain code language, ‘go for morning walks’ is written as ‘$*?#’, ‘good for health’ is written as ‘£2@” and ‘good to walk fast’ is written as ‘+@T #’, then what is the code for ‘health’ in that code language ?

(a) + (b) # (c) £ (d) ? (e) None of these.

Sol. In the first and second statements, the common code symbol is “?” and the common word is ‘for’, So, ‘?’ means ‘for’. In the second and third statements, the common code symbol is *@* and the common word is ‘good’. So, *@” means ‘good’. Thus, in second statement, “£” means ‘health’. Hence, the answer is (c). :

Ex.3. In a certain code : ‘ing ping sing’ means ‘how are you’, ‘sing ring ding’ means ‘what about you’ and ‘ding fing ching’ means ‘what to do’, then how is ‘do’ written in this code language ?

(a) ing (b) fing (c) ching (d) data inadequate (e) None of these.

Ex.4. In certain code ‘cha pa ta’ means ‘I like orange’, ‘ga fa pa’ means ‘they like mango* and ‘fa cha ka’ means ‘orange mango sour’, then which word stands for “sour” ?

(a) ta (b) ka (c) ra (d) data inadequate (e) None of these.

Sol. The code for sour is ‘ka’.

TYPE 4 : CODING BASED ON RENAMING

Ex.1. If ‘green’ is called ‘white’, ‘white’ is called ‘yellow’, ‘yellow’ is called ‘blue’, ‘blue’ is called ‘pink’

and ‘pink’ is called ‘black’, then what is the colour of milk ?

(a) green (b) blue (c) pink (d) vellow (e) None of these.

Sol. (d) The colour of milk is white. But the code of white is yellow so the answer is yellow.

Ex.2. If ‘cloud’ is called ‘white’, white is called ‘rain’, rain is called ‘sreen’, green is called ‘air’, air is

called ‘blue’, blue is called ‘water’. Where will birds fly ?

(a) Air (b) cloud (c) white (d) rain (e) blue.

Sol. (e) Birds fly in air but here air is coded as blue so the answer is blue.

PRACTICE TEST-II

Direction (1 to 4) : Study the following information carefully and answer the questions given below :

The consonants of English alphabet have been coded by using digits 1 to § and the vowels have been coded by using different symbols.

Letters : G B K H Z M F

R V C S D Q X

J N T L W Y P

Digit: 5 4 1 3 2 8 7

If any vowel is not in the beginning or last, it is coded as 6. If any vowel is at the beginning or in last, it is coded as 9. However, if the same vowel is placed at both beginning and in the last, it is coded as *$* at both the places. Choose the correct coded forms of each of the following letter-groups.

1. AFDQENI

(a) 6728949 (b) $72864$ (c) 9728649 (d) 9728949 (e) None of these.

2. ENIANGE

(a) 6499456 (b) $46645$ (c) $4$$45$ (d) 9466456 (e) None of these.

3. PKDEJHI

(a) 7126539 (b) 712653$ (c) 7129539 (d) 712$53$ (e) None of these.

4. EGTARLQE

(a) 65195386 (b) $51$538$ (c) 95165389 (d) $519538$ (e) None of these.

Direct ions (5 to 8): Study the following information carefully and answer the questions piven below it :

Digits in the numbers are to be coded as follows :

Digit: 7 3 5 0 2 1 6 4 9 8

Code: N H L T F D R Q G P

Following conditions are to be observed :

(i) Ifthe first digit is even and last digit is odd, they are to be coded as $ and @ respectively.

(it) If the first digit is odd and the last digit is even they are to be coded as # and £ respectively.

(iii) If zero is preceeded as well as followed by an odd digit, then zero is to be coded as ↑

(iv) If zero is preceeded as well as followed by an even digit, then zero is to be coded as ↓

(v) Zero is not considered as either even or odd.

5. What will be the code for 36250098 ?

(a) $RFLTTG£ (b) #RFLTTG@ (c) #RFLTTGE£ (d) $RFLTTG@ (e) None of these.

6. What will be the code for 1375490 ?

(a) DHNLQGT (b) #HNLQG£ (c) DHNLQG# (d) £HNLQG# (e) None of these.

7. SQRL↑H@ could be the code for which of the following numbers

(a) 8465032 (b) 8456037 (c) 8465032 (d) 6475031 (e) None of these.

8. QLP ↓RNT is a code for which of the following number :

(a) 6580470 (b) 4780650 (c) 6580470 (d) data inadequate (e) None of these.

Directions (9 to 15): In each of these questions a group of letters is given followed by four combinations of number / symbol numbered (a), (6), (c) and (d). Letters are to be coded as per the scheme and conditions given below. You have to find out the serial number of the combination, which represents the letter group. Serial number of that combination is your answer. If none of the combinations is correct, your answer is (e) i.e. None of these.

Letters : Q M S I N G D K A L P R B J E

Number/Symbol: 7 @ 4 # % $ 6 1 2 £ 5 * 9 8 3

Conditions :

(i). If the first letter is a consonant and the last a vowel, both are to be coded as the code of the vowel.

(ii) If the first letter is a vowel and the last a consonant, the codes for the first and the last are to be interchanged.

(iii) If no vowel is present in the group of letters, the second and the fifth letters are to be coded as ©.

9. BARNIS

(a) 92*#%4 (b) 924#*% (c) 92*#%9 (d) 42*$%4 (e) None of these.

10. DMBNIA

(a) 6@9%#2 (b) 2@9%#6 (c) 2@9%#2 (d) 2©9%#2 4 (e) none of these.

11. IJBRLG

(a) #89*£$ (b) #89*£# (c) $89*£# (d) $89*£S (e) None of these.

12. BRGQJN

(1) 9©%7% (b) ©9$7%© (c) 91$78% (d) %1$789 (e) None of these.

13. EGAKRL

(a) #£S21* (b) £$21*3 (c) £21*# (d) #£$21# (e) None of these.

14. QNKLBE

(a) 7%1£93 (b) 71£$21*3 (c) 3%1£93 (d) 3%1£39 (e) None of these.

15. APSRNI

(a) 254*%# (b) 245&%# (c) 245%&# (d) 542&%# (e) None of these.

ANSWERS

l. (c) 2. (b) 3. (a) 4. (e) 5.(c) 6. (a) 7.(e) 8. (e) 9. (e) 10. (c)

11. (c) 12. (a) 13. (b) 14. (c) 15.(a)

PRACTICE TEST-III

1. If ‘bangle’ is called ‘cassette’, ‘cassette’ is called ‘table’, ‘table’ is called ‘Game’, and ‘Game’ is called ‘Cupboard’. Then which is played in the tape recorder ?

(a) Bangle (b) Cassette (c) Table (d) Cupboard (e) None of these.

Directions (2 to 3) : In a certain code language.

(A) ‘kemp lamp tems’ means ‘speak the truth’ ;

(B) ‘bis tim nak* means ‘always seek knowledge’ ;

(D) ‘lik bis zap’ means ‘never seek violence’.

2. Which letter code stands for ‘always’ ?

a) nak (b) tim (c) bis (d) zap (e) tems.

3. To find the answer to the above questions, which of the following statements is not necessary ?

(a) A (b) B (c)C (d) D (e) None of these.

Directions (4 to 7) : According to a certain code, .

(A) ‘min fin bin gin’ means ‘trains are always late’ ;

(B) ‘gin din cin hin’ means ‘drivers were always punished’ ;

(D) ‘din kin fin vin’ means ‘all passengers were Jate’. “

4. ‘Drivers were late’ would be written as

(a) mincindin (b) fin cin din (c) fin din gin (d) gin hin min.

5, Which word is represented by ‘vin’ ?

(a) all (b) late (c) trains (d) drivers.

6. ‘hin min kin’ would mean :

(a) Always late trains (b) Passengers are punished

7. What is code for drivers ?

(a) nn (b) cin (c) rin (d) gin (e) hin

Directions (8 to 13) : Read the following information to answer these questions : .

In a certain code language, ‘481’ means ‘sky is blue’, ‘246’ means ‘sea is deep’ and ‘698’ means ‘sea looks blue’.

8. What number is the code for ‘deep’ ?

(a) 1 (b) 2 (c) 4 (d) 6.

9, What number is the code for ‘blue’ ?

(a) 1 (b) 6 (c) 8 (d) 9.

10. What number is the code for ‘sea’ ?

(a) 2 (b) 4 (c) 6 (d) 8.

11. What number is the code for ‘looks’ ?

(a) 4 (b) 6 (c) 8. (d) 9.

12. What number is the code for ‘is’ ?

(a) 1 (b) 2 (c) 4 (d) 8.

13. What number is the code for ‘sky’ ?

(a) 1 (b) 4 (d) 8 (d) None of these.

Directions (14 to 18): Study the following information and answer the questions that follow : In a certain code language, ‘hope to see you’ is coded as ‘re so na di’, ‘please come to see the party’ is coded as ‘fige na di ke zo’, ‘hope to come’ is coded as ‘di so ge” and ‘see you the party’ is coded as ‘re fi zo na’.

14. How is ‘please’ coded in the given code language ?

(a) di (b) ke (c) Di (d) Na (e) None of these.

15. What does the code ‘so’ stand for in the given code lang.

(a) hope (b) come (c) see (d) TO (e) None of these.

16. How is ‘party’ coded in the given code language.

(a) Either ‘re’ or ‘fi’ (b) Either ‘zo’ or ‘na’ (c) Either ‘zo’ and “fi” (d) Either ‘zo’ or ‘ge’ . (e) Either ‘ke’ or ‘fi’.

17. How will ‘please see you’ be coded in the given code language

(a) Re Na Ke (b) So Re Na (c) Zore na (d) Na Di Ke (e) Fe re ge.

18. Which one of the following will be coded as ‘so di re’ in the given code language.

(a) You see hope (b) Hope you please (c) Hope you come (d) The hope to

(e) You hope to.

Directions (19 to 23) : Study the following information carefully and answer the questions given below. .

In a certain code language:

“Students meeting discussion” is coded as “E#6 U#7 S$9”

“Healthy exercise walk” is coded as “Li#3 A$6 E$7”

“Good early sleep” is coded as “E$4 O$3 R34”

19. What is the code of “size” as per the given code language?

(a) 1$3 (b) Z$3 (c) 1#3 (d) E#3 (e) None of these.

20. Which of the following word has code “S113” as per the given code language?

(a) Rise (b) Case (c) Miss (d) Dice (e) Either (c) or (d).

21. What is the code of “East India” as per the given code language?

(a) S#4D$4 (b) S$3 D#4 (c) D#3D$4 (d) D$3 D#4 (e) None of these.

22. ‘Which of the following pair of words have code of “O$3 Ei/6” as per the given code language? (a) good evening (b) exam prepare (c) good morning (d) goodnight (e) either (a) or (h).

23. What is the code of “Man and heman” as per the given code language?

(a) N$2 D#2 M$4 (b) N#2 D$2 M$4 (c) N$2 D$2 M#4 (d) N#2 D#2 M$4 (e) None of these.

PRACTICE TEST IV

Directions (1-3) : Study the following information carefully and answer the questions given below: In a certain code language

‘given time simple plan’ is written as ‘@,E4 &N4 %N5 #E6’

‘tired solution plant great’ is written as ‘#N8 @D5 %T5 & T5’

‘sick point good turn’ is written as ‘#K4 %D4 @N4 & T5’

‘garden sister phone team’ is written as ‘&E5 #R6 %N6 @,M4’

1. Which of the following code for ‘translate’?

(a) @E8 (b) @E9 (c) #E8 (d) #T8 (e) #T9

2. Which of the following code for ‘plan’?

(a) %NS (b) @E4 (c) &N4 (d) #E6 (e) None of these

3. In the given code language, what does the code ‘%D4’?

(a) point (b) turn (c) sick (d) good (e) None of these

Directions (4-8) : Study the following information carefully and answer the questions given below: In a certain code language,the following statements are written as:

Time and tide waits for none is written as 4.5N!, 6M$,7.5T&, 6D$, 4.50*, 6N%

Truth always prevails is written as 9Y!, 12I +,7.5T$

Please stop shouting here is written as 9S+,12N/, 60/, 6R<

Hello World is written as 7.5I<, 7.51&

4. What is the code for “shouting”?

(a) 60/ (b) 12N/ (c) 95+ (d) 6R< (e) Can’t be determined

5. How ean the word “scream” be coded as in the above language?

(a) OA\ (b) 95\ (c) 9A/ (d) 6M/ { (e) Can’t be determined

6. What is the code for “take him home” ?

(a) 6M>, 4.5M<, 6K$ (b) 6T <, 4.SM$, 6K> (c) 6A>, 4.5M, $ 6M<

(d) 4.SM$, 6K$, 6M> (e) 4.51<,6K$, 6M<

7. What is the code for “fine”?

(a) 6N< (b) 6F! (c) 4F* (d) 6N* (e) None of the above

8. What is the code for “hamstring”?

(a) 9N> (b) 13.5H< (c) 13.5N< (d) 9H< (e) Can’t be determined

Directions (9-12) : Consider the following statements and the questions that follow. We will analyse this problem in detail after that. In a certain code language

“login Mentors and check” is coded as “$4e %4g #2n @6t”

“reads article study there” is coded as “@Gi #4u $4e %4a”

“comment about yours doubt” is coded as “$4u @4o %6m #4u”

“get clear exams enjoy” is coded as “@4e #4a $4J %2e”

9. What is the code for exams?

(a) @4e (b) #4a (c) $4J (d) %2e (e) None of these

10. What is the code for study?

(a) $4e (b) #4u (c) %4a (d) @6i (e) None of these

11. What is the code for about?

(a) %6m (b) $4u (c) @4o (d) #4u (e) None of these

12. If we code “study Mentors clear exams” as per the above coding method, what will be the code?

(a) $6u %4d #4a @4e (b) %4u #4e @6t $4a

(e) None of these

Directions (13-17): Study the following information arrangement carefully and answer the questions given below: With a certain code language,

“The meeting adjourned abruptly” is written as “!e48” “@h0B” “#b63” “$d80”

”Since India gained Internet” is written as “#n63” “-a35” “%i24″ “%n2g”

“Scientists have discovered bacteria” is written as “*al5” “#a63” “&c99” “&i99”

“Current economic scenario fine” is written as “#c63” “*i15” “#c63” “!u48”

13. What is the code for ‘gained’?

(a) %i24 (b) #n63 (c) -a35 (d) %n24 (e) None of these

14. What is the code for ‘Since meeting fine’?

(a) “*a15 !e48 *i15” (b) “%i24 @h08 *i1 5″ (c)”%i24!e48*#c63”

(d) “%i24!e48*i15” (e) None of these

15. What does “&c99 @i99 #n63 @hOB” stand for?

(a) sine India have fine (b) The scientists discovered internet

(e) Cannot be determined

16. What could be the code for ‘economic internet’?

(a) #n63 #c63 (b) %i24 *a15 (c) !e48 #n63 (d) #c63 -a35 (e) None of these

Directions (17-20): Study the fidlowing information cartfullv and answer the given questions In a certain code language

“Giving more emphasis are” is written as “BQ16+, UT12! KL08&, NQ09*”.

“Make works us interesting” is written as “IR08!, LP33&, VY15+. MW04*”.

“Lazy and intolerant attitude” is written as “ZW09!, RA20*, UG16&, KD08#”.
” Knowledge sharing must be ” is written as ” QB21!. XL08#, TC04&, JT27*”.

17. What is the code for ‘Knowledge’ in the given code language?

(a) QB21! (h) IR08! (c) JT27* (d) TC04& (e) XL08#

18. What is the code for ‘Giving attitude’ in the given code language?

(a) BQ16+, MW04 (b) UT12!, ZW09! (c) UT12 !, RA20* (d) KL08&., UG16&

(e) UT12!, UG16&

19. What may be the possible Code for ‘more interesting knowledge’ in the given code language?

(a) I R08!,KL08&, JT27* (b) LP33&, KL08&:, BQ16+ (c) ZW09!, VY15+, JT27*

(d) LP33&, KL08&:, JT27* (e) ZW09!, KL08&, JT27*

20. What may be the possible code for ‘be intolerant’ in the given code language?

(a) TCO4&, RA20* (b) OB21!, UG16& (c) XL08#, KD08#

(d) OB21!, ZW09! (e) JT27*, ZW09!

Directions (Q. 21-25): Study the following information to answer the given questions:

In a certain code,

“RAIL MADLY BUN JAR” is written as ’19#L, 7%Y, 16$N, 12@R’

“JOB RAPID BOT MONKEY” is written as ’28@B, 28#D, 10$T, 8%Y’

“MICRO BOAR RANSOM JUMP” is written as ‘21%O, 13$R, 20#M, 15@P’

“RADAR JUKE BANGLE MOD” is written as ’14#R, 26@E, 28$E, 26%D’

21. The code for the word ‘RAN’ is

(a) 8%N (b) 8*N (c) 17#N (d) 16#N (e) None of these

22. The code ’27#E’ denotes which of the following word?

(a) RUDE (b) REVERSE (c) RUPEE (d) RANDOM (e) None of these

23. Which of the following is the code for “MONK”?

(a) 20%K (b) 26%K (c)28!K (d) 24!K (e) None of these

24. Which of the following denotes % symbol?

(a) A (b) M (c) B (d) R (e) J

25. Which of the following is the code for ‘MACRO BAKE ROSE JAIL’

(a) 15@E,13#O, 5 ? E, 13%L (b) 21%E, 6$L, 18#E, 20@O (c) 19@E, 17#L, 7?E, 18%O

(d) 26$E, 1 7%O, 26#E, 19@L (e) None of these

Direction (26-30): Study the information carefully answers the questions piven below.

In a coded language D, E, F , +, ^, ~ are represented by 6, 12, 10, 4, 7 and 2 respectively.

When any two symbols used together then one of them represent hour hand and another represent minute hand in a clock.

For e.g. D ~ is represents 6:10 AM in clock.

^ F is represents 7:50 AM in clock,

Note – Consider all time at AM unless stated.

26. Sanjay starts walking at + F and goes to park and come back to home at D^. How much time Sanjay took in this period?

(a) 112 min (b) 113 min (c) 115 min (d) 10min (e) 105 min

27. Renu start listening song at F + and listens until E ^ . How much time she thinks she spend in listening songs? (Note: take E ^ as PM)

(a) 2 hour 15 minutes (b) 2 hour 18 minutes (c) 3hour 14 minutes

(d) 3 hour 17 minutes (e) None of these

28. A Fashion show is scheduled at ^ F the Manager is required to reach at least 90 mins early so that it looks all the arrangements and schedule everything at the show. At what time should he reach?

(a) F^ (b) D+ (c) +D (d) –E (e) Data inadequate

29. A washing machine takes 100 minutes to be Wash and Dry clothes completely at what time should Sneha start the machine so that it is wash and Dry clothes at the time when she wants the cloth to wear and she wants the cloth to wear at +D?

(a) D- (b) ^+ (c) F+ (d) DE (e) ~F’

30. If the Program start at ~^ but dancer reaches 120 minutes late. At what time does she reach?

(a) ^ ~ (b) +F (c) +^ (d) D+ (e) E~

ANSWERS 4

1. (b) 2. (c) 3. (d) 4. (b) 5. (c) 6. (e) 7. (d) 8. (c) 9. (b) 10. (b)

11. (c) 12. (b) 13. (c) 14. (d) 15. (b) 16. (a) 17. (c) 18. (e) 19. (d) 20. (a)

21. (d) 22. (c) 23. (a) 24. (b) 25. (d) 26. (e) 27. (a) 28. (d) 29. (a) 30. (c)

PRACTICE TEST V

Direction(1-5): In a certain number system there are only two notations to represent numbers: % and &. 0 Is represented by % and 1 by & The subsequent numbers are represented in the following manner: 2 is represented as &%, 3 is represented as &&, 4 is represented as &%%, 5 is represented as &%& and so on.

Based on this coded language, answer the following questions.

1. What is the resultant of the following expression?

&&&&&%& ÷ && %% & x &%&%

(a) &&%%&% (b) &%%&%& (c) &&%&%&% (d) &&%%&%&

(¢) None of these.

2. What is the resultant of the following expression?

&&%&&& + &%%%%%& — &&%% x &%&

(a) &&&%%& (b) &&&%% (c) %&&&% (d) &&&&%% (e) None of these

3. ‘What is the resultant of the following expression? &&%% x &&& ÷ && + &&&& x &%%

(a) &%%&&%% (b) &%&&%%% (c) &%&&%%& (d) &&%&&%% (e) None of these

4. What will- be the possible code for “34 x 7”

(a) &&&%&&%& (b) &&&%&&%% (c) &%&&%%& (d) &&%&&%% (e) None of these

5. What will be the sum of “&%&%&%%, &%%&&% and &&&&%%%”?

(a) &&&&%%&% (b) &&&&%%&& (c) &&&%%%&% (d) %&&&%%&% (e) None of these

Direction (6-10): Read the information carefully and answer the questions that follow:

In a certain code language, the symbol for ‘0’ is ‘%’ and ‘1’ is &. There are no other symbols for numbers greater than one. The numbers greater than one are to be written only by using the two symbols given above.

0 is written as %,

1 is written as &,

2 is written as & %,

3 is written as &&,

4 is written as & % % and so on.

6. Which of the following represents 34?

(a) &&%%%& (b) &&%%&& (c) &%%%&% (d) %%%&&% (e) %&&%%&

7. Which will represent 5 times of &&&&?

(a) 75 (b) 40 (c) 50 (d) 55 (e) 35

8. Which will represent 4 times of &&&&?

(a) 60 (b) 40 (c) 50 (d) 55 (e) 35

9. What will &&&%%&%&%&%?

(a) 1682 (b) 1284 (c) 1834 (d) 1823 (e) 1382

10. Which of the following will represent the value of (&%%%% ^x &%&) – (&%% x &%&%)

(a) 20 (b) 50 (c) 10 (d) 40 (e) 35

ANSWERS

(a) 2. (d) 3. (b) 4. (c) 5. (a) 6. (c) 7. (a) 8. (a) 9. (c) 10. (d)

CODING-DECODING

PRACTICE TEST IV

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CODING-DECODING

PRACTICE TEST IV

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