**Number Series Questions for SBI Clerk Exam (Set – 2):**

75 SBI Clerk Mocks & Sectionals – Rs. 360

Download all SBI Clerk questions and Answers PDFÂ

For more questions visit SBI Clerk Previous question papers (solved)

**Instructions:**

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

**Question 1:** 7, 17, 54, ?, 1098, 6591

a) 204

b) 212

c) 223

d) 219

e) None of these

**Question 2:** 55, 109, ?, 433, 865, 1729

a) 279

b) 372

c) 217

d) 318

e) None of these

**Question 3:** 19, 38, ?, 228, 684, 1368

a) 106

b) 114

c) 121

d) 98

e) None of these

**Question 4:** 87, 89, 95, 107, ?, 157

a) 127

b) 122

c) 139

d) 140

e) None of these

**Question 5:** 474, 459, 429, 369, 249, ?

a) 9

b) 0

c) 4

d) 11

e) None of these

SBI Clerk Previous question Papers

SBI Clerk expected Cutoff 2018

**Question 6:** 522, 1235, 2661, 4800, 7652, 11217, ?

a) 15495

b) 16208

c) 14782

d) 16921

e) 14069

**Question 7:** 51975, 9450, 2100, 600, 240, 160, ?

a) 80

b) 120

c) 320

d) 240

e) 300

**Question 8:** 2187, 729, 243, 81, 27, 9, ?

a) 36

b) 3

c) 18

d) 6

e) 12

**Question 9:** 6, 26, 134, 666, 3334, 16666, ?

a) 84344

b) 83443

c) 84434

d) 83334

e) 83344

**Question 10:** 4, 18, 48, 100, 180, 294, ?

a) 416

b) 480

c) 512

d) 384

e) 448

Take a Free SBI Clerk Mock test

**Solutions:**

**1) Answer (D)**

In the given series, the nth term is obtained as:

nth term = previous term * n +3

Here, 4th term = 54*4 +3 = 216 + 3 = 219

Hence, the correct option is option D.

**2) Answer (C)**

Here, the nth term is obtained by general formula, nth term = Previous term *2 – 1

We have to find third term, third term = 109*2 – 1 = 218 – 1 = 217

Hence, option C is correct.

**3) Answer (B)**

Here, the series is obtained by multiplying the previous term once by 2 and next time by 3.

38 is 19*2.

Hence, next term is obtained by multiplying 3 to 38.

Therefore, 38*3 = 114.

Therefore, the correct option is B.

**4) Answer (A)**

Here, the difference between consecutive terms is:

89-87 =2

95-89 =6

107-95 = 12

Now, difference of the difference is :

6-2 = 4

12-6= 6

Difference series is an arithmetic progression with common difference 2. Hence the next term will be 8 and difference between terms will be 20.

Next term = 107+20 = 127

Hence, the correct option is A.

**5) Answer (A)**

Here, the nth term is obtained by nth term = previous term – 15*2^(n-2)

Hence, the 6th term = 249 – 15*2^4 = 9

Therefore, next term in series is 9.

Option A is correct.

SBI Clerk Free Practice Questions

**6) Answer (A)**

Here, the nth term is given by ‘previous term + 713*(n-1)’.

Now, we are supposed to find 7th term.

Therefore, 7th term = 11217+713*6 = 15945.

Hence, option A is correct.

**7) Answer (C)**

51975 9450 2100 600 240 160 ?

Ratio of 51975 and 9450 = 5.5

Ratio of 9450 and 2100 = 4.5

Ratio of 2100 and 600 = 3.5

Ratio of 600 and 240 = 2.5

Ratio of 240 and 160 = 1.5

Ratio of 160 and unknown number = .5

Hence, the number is 160/0.5 = 320.

**8) Answer (B)**

The given number series is a Geometric Progression with common ratio being 3.

Here the next term = (previous term)/3.

Therefore, the last term is 9 and hence, next term will be 9/3 = 3.

Therefore, the correct option is B.

**9) Answer (D)**

Here, the nth term is obtained by ‘previous term’ *5+ (-1)^(n-1) *4.

Hence, 7th term will be obtained by 16666*5 + (-1)^6 * 4 = 83334

Therefore, the correct option is option D.

**10) Answer (E)**

Lets take the first four numbers to deduce the pattern.

4 18 48 100 180 294 ?

18-4= 14

48-18= 30

110-48=52

Now, 30 -14 = 16

52 – 30 = 22

22 – 16 = 6

This difference follows for the numbers.

From this logic 448 i.e option E is the correct answer.