Verbal Reasoning : : Number Series Questions & Answers

Verbal Reasoning
Number Series

17, 19, 23, 29, (....), 37

A. 31

B. 33

C. 35

D. 36

Answer : Option A

Explanation :

The given series consists of consecutive prime numbers start with 17. The next prime number after 29 is 31.

So, the missing term is 31.

123456147, 12345614, 2345614, 234561, .....

A. 3456

B. 23456

C. 2345

D. 34561

Answer : Option D

Explanation :

In the given series remove 1 digit from start and end alternatively. i.e.

123456147, 12345614, 2345614, 234561, 34561

So, the missing term is 34561.

9, 11, 20, 31, ?, 82

A. 41

B. 60

C. 51

D. 71

Answer : Option C

Explanation :

Each term in the given series is the sum of the preceding two terms i.e.

1st term = 9

2nd term = 11

3rd term = 9 + 11 = 20

4th term = 20 + 11 = 31

5th term = 31 + 20 = 51

6th term = 31 + 51 = 82

So, the missing term is 51.

3, 4, 7, 7, 13, 13, 21, 22, 31, 34, ?

A. 42

B. 51

C. 43

D. 52

Answer : Option C

Explanation :

The given sequence is a combination of two series:

First series: Odd numbered terms i.e. 3, 7, 13, 21, 31, ?

Second series: Even numbered terms i.e. 4, 7, 13, 22, 44

The pattern followed in first series is +4, +6, +8, +10, ... and the pattern followed in second series is +3, +6, +9, ... i.e.

Terms:	First series:	Second series:
1st term	3	4
2nd term	3 + 4 = 7	4 + 3 = 7
3rd term	7 + 6 = 13	7 + 6 = 13
4th term	13 + 8 = 21	13 + 9 = 22
5th term	21 + 10 = 31	22 + 12 = 34
6th term	31 + 12 = 43	------

So, the missing term is 43.

0, 2, 3, 5, 8, 10, 15, 17, 24, 26, ?

A. 35

B. 30

C. 32

D. 28

Answer : Option A

Explanation :

The given sequence is a combination of two series:

First series: Odd numbered terms i.e. 0, 3, 8, 15, 24, (.....)

Second series: Even numbered terms i.e. 2, 5, 10, 17, 26

The pattern in both first series and second series is +3, +5, +7, +9, ... i.e.

Terms:	First series:	Second series:
1st term	0	2
2nd term	0 + 3 = 3	2 + 3 = 5
3rd term	3 + 5 = 8	5 + 5 = 10
4th term	8 + 7 = 15	10 + 7 = 17
5th term	15 + 9 = 24	17 + 9 = 26
6th term	24 + 11 = 35	------

So, the missing term is 35.