Number Series Model Questions Set 1 Practice Questions Answers Test with Solutions & More Shortcuts

Question : 21

What should come in place of the question mark (?) in the following number series?

0, 7, 26, ?, 124, 215

a) 51

b) 88

c) 37

d) 63

e) None of these

Answer: (d)

Try the pattern $n^3$ – 1. n = 1, 2, .......

Question : 22

What should come in place of the question mark (?) in the following number serie?

9, 27, 36, 63, 99, ?

a) 167

b) 162

c) 151

d) 152

e) 157

Answer: (b)

Here,

9 + 27 = 36

27 + 36 = 63

36 + 63 = 99

63 + 99 = 162.

Question : 23

What should come in place of the question mark (?) in the following number series?

10, 14, 25, 55, 140, (?)

a) 398

b) 396

c) 386

d) 388

e) None of these

Answer: (d)

The series is as follows:

× 3 – 16, × 3 – 17, × 3 – 20, × 3 – 25, × 3 – 32

Hence, ? = 140 × 3 – 32 = 388

Question : 24

What should come in place of the question mark (?) in the following number series?

2, 4, ?, 16, 32

a) 10

b) 12

c) 6

d) 8

e) None of these

Answer: (d)

The terms exhibit the pattern $2^1$, $2^2$, $2^3$ and so on.

Question : 25

What should come in place of the question mark (?) in the following number series?

24, 49, ?, 94, 15, 31, 59, 58

a) 63

b) 95

c) 51

d) 77

e) None of these

Answer: (b)

It is a combination of two series, namely

24, 49, ?, 94; and 15, 31, 59, 58

The two series correspond to

x, (2x + 1), (4x – 1), (4x – 2)

Hence the missing term is

4 x 24 – 1 = 95

IMPORTANT quantitative aptitude EXERCISES

Number Series Model Questions Set 1 Online Quiz

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