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Verbal Reasoning - Number Series Aptitude Questions

Verbal Reasoning – Number Series Aptitude Questions and Answers with solutions and Explanations for Bank PO, UPSC, CSAT, MBA, CAT, SSC-CGL, IBPS, Bank Clerical etc.

1.

Find the missing term in the following series:
3, 8, 13, 24, 41, ?
[A]70
[B]75
[C]80
[D]85

70
In the above question, the pattern followed is :
nth term + (n + 1)th term + (n + 1) = (n +2)th term.
Thus, 1st term + 2nd term + 2nd term = 3rd term;
2nd term + 3rd term + 3rd term =4th term and so on.
So, missing term = 6th term = 4th term = 5th term + 5 = 24 + 41 + 5 = 70.

2.

Find the missing term in the following series:
66, 36, 18, ?
[A]3
[B]6
[C]8
[D]9

8
In the above question, each term in the series is the product of the digits of the preceding term. So, missing term = 1 x 8 = 8.

3.

Find the missing term in the following series:
1, 3, 4, 8, 15, 27, ?
[A]37
[B]44
[C]50
[D]55

50
In the above question, the sum of any three consecutive terms of the series gives the next term. So, missing number = 8 + 15 + 27 = 50.

4.

Find the missing term in the following series:
5824, 5242, ?, 4247, 3823
[A]4467
[B]4718
[C]4856
[D]5164

4718
In the above question, each term in the series is obtained by subtracting from the preceding term the number formed by the first three digits of the preceding term. So, missing term = 5242 – 524 = 4718

5.

Find the missing term in the following series:
589654237, 89654237, 8965423, 9654423, ?
[A]58965
[B]65423
[C]89654
[D]96542

96542
In the above question, the digits are removed one by one from the beginning and the end in order alternately so as to obtain the subsequent terms of the series.

6.

Find the missing term in the following series:
3, 10, 101, ?
[A]10101
[B]10201
[C]10202
[D]11012

10202
In the above question, each term in the series is obtained by adding 1 to the square of the preceding term. So, missing term = (101)² + 1 = 10202

7.

Find the missing term in the following series:
2, 8, 16, 128, ?
[A]2042
[B]2046
[C]2048
[D]2056

2048
In the above question, each term in the series, except the first two terms, is the product of the preceding two terms. So, missing term = 16 x 128 = 2048

8.

Find the missing term in the following series:
10, 14, 26, 42, 70, ?
[A]100
[B]102
[C]106
[D]114

114
In the above question, each term in the series, except the first two terms, is 2 more than the sum of the preceding two terms. So, missing term = ( 42 + 70) + 2 = 114

9.

Find the missing term in the following series:
5, 2, 7, 9, 16, 25, ?
[A]41
[B]45
[C]48
[D]52

41
In the above question, each term in the series, except the first two terms, is the sum of the proceeding two terms. So, missing term = 16 + 25 =41

10.

Find the missing term in the following series:
563, 647, 479, 815, ?
[A]672
[B]386
[C]279
[D]143

143
In the above question, the pattern is + 84, – 168, + 336, …………… i.e. + 84, (84 x 2), + ( 84 x 2²),…………. So, missing term = 815 – ( 84 x 2³) = 815 – 672 = 143

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