Explore topic-wise InterviewSolutions in .

This section includes InterviewSolutions, each offering curated multiple-choice questions to sharpen your knowledge and support exam preparation. Choose a topic below to get started.

1.

What will come in the place of the question mark ‘?’ in the following question?15, 15, 31, 95, 383, ?1. 18152. 19153. 19194. 18195. 1935

Answer» Correct Answer - Option 3 : 1919

Solution:

Calculation:

Given:

The logic behind the given series is as follows:

15× 1 + 0 = 15

15× 2 + 1 = 31

31× 3 + 2 = 95

95× 4 + 3 = 383

383× 5 + 4 = 1,919

∴ The value of '?'is 1919.
Discussion
2.

What will come in place of question mark (?) in the following number series?47, 23.5, ?, 47, 188, 15041. 232. 353. 254. 23.55. None of these

Answer» Correct Answer - Option 4 : 23.5

Calculation:

The series follows the following pattern

47 × 0.5 = 23.5

23.5 × 1 = 23.5

23.5 × 2 = 47

47 × 4 = 188

188 × 8 = 1504

∴ The missing number is 23.5.
Discussion
3.

What should come in place of the question mark '?' in the following number series?2, 5, 11, ?, 47, 951. 312. 233. 214. 185. 27

Answer» Correct Answer - Option 2 : 23

Calculation:

The series follows following pattern

⇒ 2

⇒ 2 × 2 + 1 = 5

⇒ 5 × 2 + 1 = 11

⇒ 11 × 2 + 1 = 23

⇒ 23 × 2 + 1 = 47

⇒ 47 × 2 + 1 = 95

∴ The value of ? is 23
Discussion
4.

What will come in place of question mark (?) in the following number series?50, 47, ?, 32, 20, 51. 392. 413. 404. 385. 37

Answer» Correct Answer - Option 2 : 41

Given:

The number series:

50, 47, ?, 32, 20, 5

Concept Used:

Number series following a fixed pattern.

Calculation;

The given number series follows the pattern:

50–(3×1) = 47

47 –(3× 2) = 41

41–(3× 3) = 32

32 –(3× 4) = 20

20 –(3× 5) = 5

∴ The number coming in place of “?” in the given number series is 41
Discussion
5.

What will come in place of question mark (?) in the following number series?10, 11, 15, 24, ?, 651. 422. 453. 484. 355. 40

Answer» Correct Answer - Option 5 : 40

Given:

The number series:

10, 11, 15, 24, ?, 65

Concept Used:

Number series following a fixed pattern.

Calculation;

The given number series follows the pattern:

10+ 12 = 11

11 + 22 = 15

15 + 32 = 24

24 + 42 = 40

40 + 52 = 65

∴ The number in place of “?” in the given number series is 40
Discussion
6.

What should come in place of the question mark '?' in the following number series?2, 5, 11, 20, ?, 47, 651. 322. 223. 424. 245. 36

Answer» Correct Answer - Option 1 : 32

Calculation∶

The series follows following pattern

2 + (1× 3) = 5

5 + (2× 3) = 11

11 + (3× 3) = 20

20 + (4× 3) = 32

32 + (5× 3) = 47

47 +(6 × 3) = 65

∴ The value of ? is 32
Discussion
7.

Find the wrong term in the following number series.24, 26, 36, 62, 112, 196, 3161. 362. 263. 1124. 1965. 316

Answer» Correct Answer - Option 4 : 196

Given:

24, 26, 36, 62, 112, 196, 316

Calculation:

⇒ 24 + 2 (12+1) = 26

⇒26 + 10 (32+1) = 36

⇒36 + 26 (52+1) = 62

⇒62 + 50 (72+1) = 112

⇒112 + 82 (92+1) = 194

⇒194 + 122 (112+1) = 316

∴ The wrong term is 196.
Discussion
8.

What should come in place of the question mark '?' in the following number series?11, 27, 45, 65, ?, 1111. 982. 813. 874. 1035. 78

Answer» Correct Answer - Option 3 : 87

Calculation∶

The series follows following pattern∶

14 × 1 - 3 = 11

15 × 2 - 3 = 27

16 × 3 - 3 = 45

17 × 4 - 3 = 65

18 × 5 - 3 = 87

19 × 6 - 3 = 111

∴ The value of ? is 87
Discussion
9.

What will come in place of question mark (?) in the following number series?9, 17, 26, ?, 69, 1121. 432. 443. 334. 405. None of these

Answer» Correct Answer - Option 1 : 43

Calculation:

The series follows the following pattern

9 + 17 = 26

17 + 26 = 43

26 + 43 = 69

43 + 69 = 112

∴ The missing number is 43.
Discussion
10.

What will come in place of question mark (?) in the following number series?320, 162, 84, 46, 28, ?1. 162. 223. 144. 185. 20

Answer» Correct Answer - Option 5 : 20

Calculation:

The pattern of the number series is-

⇒ 320÷ 2 + 2 =162

⇒ 162÷ 2 + 3= 84

⇒ 84÷ 2 + 4 = 46

⇒ 46÷ 2 + 5 = 28

⇒ 28÷ 2 + 6 = 20

∴ The value of ? is 20
Discussion
11.

What should come in place of the question mark '?' in the following number series?4, 5, 4, 9, ?, 52, 1551. 192. 203. 174. 185. 21

Answer» Correct Answer - Option 3 : 17

Calculation∶

The series follows following pattern

4 × 1 + 1 = 5

5 × 1 - 1 = 4

4 × 2 + 1 = 9

9 × 2 - 1 = 17

17 × 3 + 1 = 52

52 × 3 - 1 = 155

∴ The value of ? is 17
Discussion
12.

In the following number series, a wrong number is given. Find out the wrong number.6, 15, 35, 77, 155, 2211. 152. 353. 1554. 2215. 77

Answer» Correct Answer - Option 3 : 155

6, 15, 35, 77, 155, 221

In this pattern,

⇒ 2× 3 = 6

⇒ 3× 5 = 15

⇒ 5× 7 = 35

⇒ 7× 11 = 77

⇒ 11× 13 = 143

⇒ 13× 17 = 221

∴ The wrong number in the pattern is 155
Discussion
13.

What will come in place of question mark (?) in the following number series?28, 34, 46, 66, 96, ?1. 2382. 423. 1384. 1585. None of these

Answer» Correct Answer - Option 3 : 138

Considering the above series,

28, 34, 46, 66, 96, ?

The logic of the series can be explained as,

34 – 28 = 6 = 2 × 3

46 – 34 = 12 = 3 × 4

66 – 46 = 20 = 4 × 5

96 – 66 = 30 = 5 × 6

By observing the pattern,

? – 96 = 6 × 7 = 42

⇒ ? = 42 + 96

⇒ ? = 138

∴ The value of ? is 138
Discussion