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:**

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**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

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**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

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**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

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**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:**

**1)** Answers (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)** Answers (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)** Answers (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)** Answers (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)** Answers (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.

**6)** Answers (C)

If we go reverse in order,

130 = 65*2

390= 130*3

1560= 390*4

7800= 1560*5

Answer = 7800*3 = 46800

**7)** Answers (A)

7+4 = 11

11+8 = 19

19+16 = 35

35+32 = 67

67+64 = 131

**8)** Answers (D)

5*3 – 5 = 10

10*3 – 5 = 25

25*3 – 5 = 70

70*3 – 5 = 205

205*3 – 5 = 610

Hence, answer will be 610

**9)** Answers (E)

7*5 = 35

35*6 = 210

210*5 = 1050

1050*6 = 6300

6300*5 = 31500

Hence, answer will be “None of these”

**10)** Answers (D)

513 – 18 = 495

495 – 17 = 478

478 – 16 = 462

462 – 15 = 447

447 – 14 = 433

Hence, answer will be 478

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