Nowadays, almost in all competitive exams sequence questions and answers are asked and especially in Bank Recruitment Exams like sbi clerk junior assistant.

Most Bank PO Exams including IBPS PO, SBI PO, and other exams ask 5-10 questions from Toughest Number Series like find the next number in the series. It is very important to practice Number Series Questions Answers SBI Clerk, as they can generally be solved in short span of time with high accuracy. If you learn that how to solve number series problems quickly you may easily get 5 to 10 marks. Today, we have 20 difficult Toughest Number Series Questions Answers SBI Clerk to help you practice Number Series. As usual, answers and solution are following the questions.Following are some Number Series questions which are likely to be asked/ already asked in competitive exams, while practicing you may learn shortcuts to solve number series problems and series questions tricks. Following Number Series questions will help you securing good marks in upcoming SBI PO, SBI Clerk, IBPS PO, IBPS Clerk, IBPS RRB Exams in 2017 2018.

## Number Series Questions Answers SBI Clerk

**Directions (1 – 4): In the following number series only one number is wrong. Find out the wrong number.**

**1. 4444 2224 1114 556 281.5 142.75 73.375**

- 2224
- 281.5
- 1114
- 556
- 142.75

Explanation

1. (4) The pattern of the number series is :

4444/2 + 2 = 2224

2224/2 + 2 = 1114

1114/2 + 2 = 559 not 556

559/2 + 2 = 281.5

**2. 4.5 16 25 33 38.5 42 43.5**

- 33
- 38.5
- 42
- 43.5
- 25

Explanation

2. (5) The pattern of the number series is :

4.5 + 11.5 = 16

16 + 9.5 = 25.5, not 25

25.5 + 7.5 = 33

33 + 5.5 = 38.5

**3. 6 49 305 1545 6196 18603 37218**

- 6196
- 49
- 305
- 1545
- 18603

Explanation

3. (3) The pattern of the number series is :

6 × 7 + 1 × 7 = 49

49 × 6 + 2 × 6 = 306, not 305

306 × 5 + 3 × 5 = 1545

1545 × 4 + 4 × 4 = 6196

6196 × 3 + 5 × 3 = 18603

**4. 8 5 6.5 11 26 68 207.5**

- 68
- 6.5
- 11
- 26
- 207.5

Explanation

4. (3) The pattern of the number series is :

8 × 0.5 + 1 = 5

5 × 1 + 1.5 = 6.5

6.5 × 1.5 + 2 = 9.75 + 2 = 11.75, not 11

11.75 × 2 + 2.5 = 23.5 + 2.5 = 26

26 × 2.5 + 3 = 68

**Directions (5 – 9) : What should come in place of the question mark (?) in the following number series ?**

**5. 586 587 586 581 570 ? 522**

- 545
- 543
- 551
- 557
- None of these

Explanation

5. (3) The pattern of the number series is :

586 + 1 = 587

587 + (1 – 2) = 587 – 1 = 586

586+ (-1 – 4) = 586 – 5 = 581

581 + (-5 – 6) = 581 – 11 = 570

570+ (-11 -8) = 570 -19 = 551

551 + (-19 -10) = 551- 29 = 522

**6. 64 54 69 49 74 44 ?**

- 89
- 69
- 59
- 99
- None of these

Explanation

6. (5) The pattern of the number series is :

64 – 10 = 54

54 + 15 = 69

69 – 20 = 49

49 + 25 = 74

74 – 30 = 44

44 + 35 = 79

**7. 4000 2008 1012 ? 265 140.5 78.25**

- 506
- 514
- 520
- 512
- None of these

Explanation

7. (2) The pattern of the number series is :

(4000 ÷ 2) + 8 = 2008

(2008 ÷ 2) + 8 = 1012

(1012 ÷ 2) + 8 = 514

(514 ÷ 2) + 8 = 265

**8. 5 5 15 75 ? 4725 51975**

- 520
- 450
- 525
- 300
- None of these

Explanation

8. (3) The pattern of the number series is :

5 × 1 = 5

5 × 3 = 15

15 × 5 = 75

75 × 7 = 525

525 × 9 = 4725

**9. 52 26 26 39 78 ? 585**

- 195
- 156
- 234
- 117
- None of these

Explanation

9. (1) The pattern of the number series is :

52 × 1/2 = 26

26 × 1 = 26

26 × 3/2 = 39

39 × 2 = 78

78 × 5/2 = 195

**Directions (10-14) .-What will come in place of question mark (?) in the following number series ?**

**10. 10 14 25 55 140 (?)**

- 386
- 398
- 388
- 396
- None of these

Explanation

10. (3) The pattern of the number series is :

14 – 10 = 4

25 – 14 = 11 = 4 × 3 -1

55 – 25 = 30 = 11 × 3 – 3

140 – 55 = 85 = 30 × 3 – 5

? = 140 + 85 × 3 – 7

= 140 + 248 = 388

**11. 119 131 155 191 239 (?)**

- 289
- 290
- 279
- 280
- None of these

Explanation

11. (5) The pattern of the number series is :

119 + 1 × 12 =131

131 + 2 × 12 = 155

155 + 3 × 12 = 191

191 + 4 × 12 = 239

239 + 5 × 12 = 299

**12. 11 57 149 333 701 (?)**

- 1447
- 1347
- 1368
- 1437
- None of these

Explanation

12. (4) The pattern of the number series is :

11 + 1 × 46 = 11 + 46 = 57

57 + 2 × 46 = 57 + 92 = 149

149 + 2 × 92 = 149 + 184 = 333

333 + 2 × 184 = 333 + 368 = 701

701 + 2 × 368 = 701 + 736 = 1437

**13. 697 553 453 389 353 (?)**

- 328
- 337
- 362
- 338
- None of these

Explanation

13. (2) The pattern of the number series is :

697 – 553 = 144 = 12²

553 – 453 = 100 = 10²

453 – 389 = 64 = 8²

389 – 353 = 36 = 6²

? = 353 – 4² = 353 – 16 = 337

**14. 336 224 168 140 126 (?)**

- 119
- 118
- 116
- 121
- None of these

Explanation

14. (1) The pattern of the number series is :

336 – 224 = 112

224 – 168 = 56

168 – 140 = 28

140 – 126 = 14

? = 126 – 7 = 119

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