## Number Series Questions and Answers Part-5

1. Find the missing term: 198, 194, 185, 169, ?
a) 92
b) 112
c) 136
d) 144

Explanation: The pattern is - 4, - 9, - 16,.....i.e., - 22, - 32 , - 42 ,..............
So, the missing term = 169 - 52 = 169 - 25 = 144

2. Find the missing term: 10, 100, 200, 310. ?
a) 400
b) 410
c) 420
d) 430

Explanation: The pattern is + 90, + 100, + 110......
So, the missing term = 310 + 120 = 430

3. Find the missing term: 2, 2, 5, 13, 28, ?
a) 49
b) 50
c) 51
d) 52

Explanation: The pattern is + 0, + 3, + 8, + 15,.............i.e.,+ (12 - 1) , + (22 - 1), + (32 - 1), + (42 - 1),................
So, the missing term = 28 + (52 - 1) = 28 + 24 = 52

4. Find the missing term: 0, 2, 8, 14, ?, 34
a) 20
b) 23
c) 24
d) 25

Explanation: The pattern is + 2, + 6, + 6, + 10, +10,.....
So, the missing term = 14 + 10 =24

5. Find the missing term: 24, 60, 120, 210, ?
a) 300
b) 336
c) 420
d) 525

Explanation: The pattern is +36, +60, +90, . . . . . . i.e., +[6 × (6 + 0)], + [6 × (6 + 4)], + [6 × (6 + 9)] . . . . . .
So, the missing term
= 210 + [6 × (6 + 15)]
= 210 +126
= 336

6. 34, 30, 26, 22, 18, 14, 10, ... choose which pair of numbers comes next?
a) 8, 6
b) 6, 4
c) 14, 18
d) 6, 2

Explanation: This is a simple subtraction series, in which 4 is subtracted from each number to arrive at the next.

7. 32, 31, 32, 29, 32, 27, 32, ... choose which pair of numbers comes next?
a) 25, 32
b) 31, 32
c) 29, 32
d) 25, 30

Explanation: This is an alternating repetition series. The number 32 alternates with a series in which each number decreases by 2.

8. 7, 9, 66, 12, 14, 66, 17, ... choose which pair of numbers comes nex
a) 19, 66
b) 66, 19
c) 19, 22
d) 20, 66

Explanation: This is an alternating addition series with repetition, in which a random number, 66, is interpolated as every third number. The regular series adds 2, then 3, then 2, and so on, with 66 repeated after each "add 2" step.

9. 3, 8, 10, 15, 17, 22, 24, ... choose which pair of numbers comes next?
a) 26, 28
b) 29, 34
c) 29, 31
d) 26, 31