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MCQ on Number Series for Competitive Exams

Number series MCQ for competitive exams

Solve the number series questions given below:

3 219 344 408 ? 443 444

(a) 416

(b) 435

(c) 423

(d) 428

(e) None of these

Solution: (b)

The pattern of the number series is :

\(\displaystyle 219-3=216={{6}^{3}}\)

\(\displaystyle 344-219=125={{5}^{3}}\)

\(\displaystyle 408-344=64={{4}^{3}}\)

\(\displaystyle ?=408+{{3}^{3}}=408+27=435\)


2 14 84 420 1680 5040 ?

(a) 8940

(b) 8680

(c) 10080

(d) 5030

(e) None of these

Solution: (c)

The pattern of the number series is as given below:

\(\displaystyle 2\times 7=14\)

\(\displaystyle 14\times 6=84\)

\(\displaystyle 84\times 5=420\)

\(\displaystyle 420\times 4=1680\)

\(\displaystyle 1680\times 3=5040\)

\(\displaystyle 5040\times 2=10080\)


27 125 ? 729 1331 2197 3375

(a) 612

(b) 347

(c) 216

(d) 343

(e) None of these

Solution: (d)

The pattern of the number series is as given below:

\(\displaystyle {{3}^{3}}=27;{{5}^{3}}=125\)

\(\displaystyle {{7}^{3}}=343;{{9}^{3}}=729\)

\(\displaystyle {{11}^{3}}=1331;{{13}^{3}}=21973\)

\(\displaystyle {{15}^{3}}=3375\)


358356 352 344 328 296 ?

(a) 232

(b) 247

(c) 225

(d) 255

(e) None of these

Solution: (a)

The pattern of the number series is as given below:

358 – 2 = 356

356 4 = 352

352 – 8 = 344

344 – 16 = 328

328 – 32 = 296

296 – 64 = 232


50000 10000 2500 500 125 ? 6.25

(a) 75

(b) 25

(c) 50

(d) 31.5

(e) None of these

Solution: (b)

The pattern of the number series is as given below:

\(\displaystyle 50000\div 5=10000\)

\(\displaystyle 10000\div 4=2500\)

\(\displaystyle 2500\div 5=500\)

\(\displaystyle 500\div 4=125\)

\(\displaystyle 125\div 5=25\)

\(\displaystyle 25\div 4=6.25\)