# Number Series Questions for Bank Clerk

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Reasoning, number series questions for bank exams we are providing the Number Series Questions for Bank Clerk solving trick questions like prelims and mains exams like SBI IBPS & RRB

Number Series Questions for Bank Clerk:

Instructions:

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

Question 6:

?, 7800, 1560, 390, 130, 65

a) 47120
b) 49900
c) 46800
d) 48350
e) None of these

Question 7:

7, 11, 19, ?, 67, 131

a) 35
b) 23
c) 46
d) 51
e) None of these

Question 8:

5, 10, 25, 70, 205, ?

a) 650
b) 670
c) 550
d) 610
e) None of these

Question 9:

7, 35, 210, ?, 6300, 31500

a) 1040
b) 1060
c) 1080
d) 1030
e) None of these

Question 10:

513, 495, ?, 462, 447, 433

a) 460
b) 491
c) 488
d) 478
e) None of these

Answers and Solutions for Number Series Questions for Bank Clerk:

Solutions:

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.

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.

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.

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.

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.

If we go reverse in order,
130 = 65*2
390= 130*3
1560= 390*4
7800= 1560*5

7+4 = 11
11+8 = 19
19+16 = 35
35+32 = 67
67+64 = 131

5*3 – 5 = 10
10*3 – 5 = 25
25*3 – 5 = 70
70*3 – 5 = 205
205*3 – 5 = 610

7*5 = 35
35*6 = 210
210*5 = 1050
1050*6 = 6300
6300*5 = 31500
Hence, answer will be “None of these”