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Series Completion questions and answers

  1. 4, 7, 12, 19, 28, ?
    A. 49 B. 40 C. 36 D. 39

Correct Answer: D
First term : 4
Second term: 4+3 = 7
Third term : 7+5 = 12
Fourth term : 12+7 = 19.
Fifth term : 19+9 = 28.
Therefore,
Next Terms : 28+11 = 39
  1. 6, 11, 21, 36, 56, ?
    A. 91 B. 51 C. 81 D.42

Correct Answer: C
series increased in 5 multiplies
6 (+5) = 11 (+10) = 21 (+15) = 36 (+20) = 56 (+25) = 81
  1. 8, 28, 116, 584, ?

A. 1752 B.3504 C. 3508 D. 3502


Correct Answer: C
(8 × 3) +4 = 28 (28 × 4) + 4 = 116 (116 × 5) = 584 (584 × 6) + 4 = 3508.
  1. 4, 6, 12, 14, 28, 30, ?

A. 32 B. 64 C. 62 D. 60


Correct Answer: D
The given sequence is a combination of two series 4, 12, 28, (…) and 6, 14, 30.
The number pattern followed in the first series is +8, +16, +32
So, the missing number = 28 + 32 = 60.
  1. The series: 4, —8, 16, —32, 64, (…)

A. 128 B. —128 C. 192 D. —192


Correct Answer: B
Each number in the series is got by multiplying the preceding number by —2.
Missing term = 64 x (—2) = —128
  1. 2, 7, 14, 23, ?, 47

A. 28 B. 34 C. 31 D. 38


Correct Answer: B
The given sequence is +5, +7, +9 …i.e. 2+5= 7; 7+7= 14; 14 +9 23
Missing number = 23 + 11 = 34.
  1. 6, 24, 12, ?, 18, 8, 24

A. 4 B. 8 C. 16 D. 6


Correct Answer: C
The given sequence is a combination of two series 6, 12, 18, 24, and 24, (…), 8.
The first series consists ofconsecutive multiples of 6 and the second series consists of multiples
of 8. Thus, the missing number is a multiple of 8 which lies between 8 and 24, which is 16.
  1. 2, 5, 9, 19, 37, ?

A. 76 B. 75 C. 74 D. 72


Correct Answer: B
Here, the numbers in the even position are equal to the numbers in the odd position multiplied by 2 and added by 1. The numbers in the odd positions are got by multiplying numbers in the even position by 2 and subtracting 1 from it. So the answer is 37 x 2 + 1 = 75.
  1. 71, 76, 69, 74, 67, 72, ?

A. 65 B. 76 C. 80 D. 77


Correct Answer: A
Here the series is got by addition of 5 and subtraction of 7 to terms alternately.
Here, 71 +5 = 76; 76 — 7 = 69; 69 +5 = 74; 74 — 7 = 67 and so on.
So, the missing term = 72 — 7 = 65.
  1. 11, 13, 17, 19, 23, 29, 31, 37, 41, ?

A. 43 B. 47 C. 51 D. 53


Correct Answer: A
The series consists of prime numbers.
The missing number is the next prime number, which is 43.

Why to Practice Series Completion Reasoning Questions?

Practicing MCQs on series completion is incredibly useful for various competitive exams because it develops critical thinking and problem-solving abilities, essential for acing reasoning sections. Exams like CAT, SSC, UPSC, and bank tests frequently include such questions to evaluate a candidate’s aptitude and analytical skills

How Practicing MCQ on series completion helps you

  • Sharpen analytical and reasoning skills.
  • Recognize patterns in various forms.
  • Improve speed and accuracy in solving problems.
  • Prepare effectively for competitive exams.

We hope that the Series Completion MCQ Question with Answer page was helpful in your preparation. MCQ on Series Completion is an essential part of various competitive exams. By practicing Mcq on series completion with answers, aspirants can improve and test their reasoning skills. MCQ on Series Completion are particularly useful for competitive exams like SSC, SSC CGL, SSC CHSL, SSC GD, Railways, RRB NTPC, RRB Group D, State PSCs, Police, CAPF, and Defence exams like NDA, CDS and AFCAT.

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