 Number Series Asked in IBPS Clerk Prelims. Welcome to the letsstudytogether.co. If you are preparing for Bank and other competitive exams, you will come across Number series section on Quantitative Aptitude.

Today, we are providing you with “Number Series Asked in IBPS Clerk Prelims“. This Quant subject quiz based number series is important for other banking exams such as IBPS PO, IBPS Clerk, IBPS RRB Officer, IBPS RRB Office Assistant, and other competitive exams.

## Number Series Asked in IBPS Clerk Prelims: 9th December 2017

1.What will come in place of the question mark (?) in the following number series?
346,345,337,310,246, ?

A. 152

B. 139

C. 149

D. 121

E. 102

D. 121

346 – 13 = 345
345 – 23 = 337
337 – 33 = 310
310 – 43 = 246
246 – 53 = 121

2. What will come in place of the question mark (?) in the following number series?
159, 79, 39, 19, ?, 4

A. 10

B. 9

C. 15

D. 11

E. None of these

B. 9

159 – 80 = 79
79 – 40 = 39
39 – 20 = 19
19 – 10 = 9
9 – 5 = 4

3.Find the missing number in the following series:
7.5, 9, 13.5, 27, 67.5, ?

A. 189

B. 169

C. 175

D. 202

E. None of these

A. 189

7.5 + 1.5 = 9
9 + 4.5 = 13.5
13.5 + 13.5 = 27
27 + 40.5 = 67.5
67.5 + 121.5 = 189

4.Find the missing number in the following series:
2.5, 3.5, 9, 40, ?

A. 288

B. 336

C. 329

D. 328

E. None of these

D. 328

4 × 0.5 + 0.5 = 2.5
2.5 × 1 + 1 = 3.5
3.5 × 2 + 2 = 9
9 × 4 + 4 = 40
40 × 8 + 8 = 328

5.Find the missing number in the following series:
4.5,3.5,6,17,67, ?

A. 360

B. 334

C. 340

D. 430

E. 450

B. 334

4.5 × 1 – 1 = 3.5
3.5 × 2 – 1 = 6
6 × 3 – 1 = 17
17 × 4 – 1 = 67
67 × 5 – 1 = 334

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