Explore topic-wise InterviewSolutions in Current Affairs.

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1.

4, ?, 78, 276, 8881). 162). 223). 274). 18

Answer»

4,

(4 + 2) × 3 = 18

(18 + 8) × 3 = 78

(78 + 14) × 3 = 276

(276 + 20) × 3 = 888
Discussion
2.

1). 2322). 2393). 2384). 236

Answer»

The pattern of given series is:

⇒ 7 × 1 + 1 = 8,

⇒ 8 × 2 + 2= 18,

⇒ 18 X 3 + 3 = 54 + 3 = 57,

⇒ 57 × 4 + 4 = 228 + 4 = 232,

⇒ 232 ×? 5 + 5= 1160 + 5 = 1165,

⇒ ? = 232
Discussion
3.

1). 19782). 3313). 139594). 15

Answer»

As per the SERIES given in the question, it is CLEAR that it follows a pattern of:

15 × 4 + 5 = 65

65 × 5 + 6 = 331

331 × 6 + 7 = 1993 ≠ 1978

1993 × 7 + 8 = 13959

15, 65, 331, 1978, 13959 all these follow the pattern, except 1978. Hence, 1978 is INCORRECT.
Discussion
4.

5, 12, 21, 32, ?, 601). 402). 363). 454). 54

Answer»

The pattern of the given series :

⇒ 5 + 7 = 12

⇒ 12 + 9 = 21

⇒ 21 + 11 = 32

⇒ 32 + 13 = 45 = ?

⇒ 45 + 15 = 60

∴ The MISSING number of the series = 45
Discussion
5.

1). 492). 443). 484). 47

Answer»

The pattern of given series is:

→ 180 – 1 = 179,

→ 179 + 22 = 179 + 4 = 183,

→ 183 – 33 = 183 – 27 = 156,

→ 156 + 42 = 156 + 16 = 172,

→ 172 – 53 = 172 – 125 = 47

⇒ ? ?= 47
Discussion
6.

6, 9, 15, 27, 51, ?1). 842). 993). 1234). 75

Answer»

The GIVEN series,

⇒ 6 + 3 = 9

⇒ 9 + 6 = 15

⇒ 15 + 12 = 27

⇒ 27 + 24 = 51

⇒ 51 + 48 = 99 = ?
Discussion
7.

1). 602). 663). 824). 80

Answer»

The pattern of GIVEN series is:

⇒ 9 × 0.5 + 0.5 = 5

⇒ 5 × 1 + 1 = 6

⇒ 6 × 1.5 + 1.5 = 10.5

⇒ 10.5 × 2 + 2 = 23

⇒ 23 × 2.5 + 2.5 = 60 = ?
Discussion
8.

1). 1562). 1583). 1624). 168

Answer»

The pattern of the GIVEN series is:

16 = 16 + 0 × 1

22 = 16 + 2 × 3

42 = 22 + 4× 5

84 = 42 + 6 × 7

∴ 84 + 8 × 9 = 156 =?
Discussion
9.

1). 10000112). 10000013). 10000214). 100031

Answer»

The pattern of given series is:

⇒ 12 + 9 = 21

⇒ 21 + 90 = 111

⇒ 111 + 900 = 1011

⇒ 1011 + 9000 = 10011

⇒ 10011 + 90000 = 100011

⇒ 100011 + 900000 = 1000011
Discussion
10.

6, 3.5, 4.5, 11, ?, 3921). 662). 483). 454). 35

Answer»

⇒ 6 × 0.5 + 0.5 = 3.5

⇒ 3.5 × 1 + 1 = 4.5

⇒ 4.5 × 2 + 2 = 11

⇒ 11 × 4 + 4 = 48 = ?

⇒ 48 × 8 + 8 = 392
Discussion
11.

1). \(\frac{{10}}{{1000}}\)2). \(\frac{{100}}{{1900}}\)3). \(\frac{{10}}{{900}}\)4). \(\frac{{10}}{{800}}\)

Answer»

The pattern of the given series is as follows:

$(\begin{array}{l} \Rightarrow \frac{{50}}{{500}} = \frac{1}{{10}}\\ \Rightarrow \frac{{40}}{{1200}} = \frac{1}{{30}}\\ \Rightarrow \frac{{30}}{{1500}} = \frac{1}{{50}}\\ \Rightarrow \frac{{20}}{{1400}} = \frac{1}{{70}}\\ \Rightarrow \frac{{10}}{{900}} = \frac{1}{{90}} \end{array})$
Discussion
12.

81, 192, 375, 648, ?1). 10292). 13763). 14424). 1138

Answer»

The PATTERN of the above problem is:

First Term, 81 = (9)2 – (0)2

Second term, 192 = (14)2 – (2)2 = (9 + 5)2 – (0 + 2)2

Third Term, 375 = (20)2 – (5)2 = (14 + 6)2 – (2 + 3)2

Fourth Term, 648 = (27)2 – (9)2 = (20 + 7)2 – (5 + 4)2

∴ Fifth Term, ? = (27 + 8)2 – (9 + 5)2 = (35)2 – (14)2 = 1029
Discussion
13.

512, 343, 216, ?, 641). 1452). 1353). 1404). 125

Answer»

43 = 64

53 = 125

63 = 216

73 = 343

83 = 512
Discussion
14.

6, 30, 160, 820, ?1). 39982). 41303). 41024). 4054

Answer»

6,

(6 + 0) × 5 = 30

(30 + 2) × 5 = 160

(160 + 4) × 5 = 820

(820 + 6) × 5 = 4130
Discussion
15.

1). 652). 853). 754). 55

Answer»

The pattern of the given series is:

⇒ 13 - 12 - 1 = -1

⇒ 23 - 22 - 2 = 2

⇒ 33 - 32 - 3 = 15

⇒ 43 - 42 - 4 = 44

⇒ 53 - 52 - 5 = 95 = ?
Discussion
16.

1). 1162). 1263). 1324). 112

Answer»

Solution :

Given series : 11 , 14 , 22 , 40 , 73 , ?

The above series follow the pattern,

3 => 3 + 11 = 14

(3 + 5) = 8 => 8 + 14 = 22

(8 + 10) = 18 => 18 + 22 = 40

(18 + 15) = 33 => 33 + 40 = 73

(33 + 20) = 53 => 53 + 73 = 126 

So, the correct OPTION is 2). 126
Discussion
17.

12, 27, ?, 75, 1081). 252). 483). 814). 53

Answer»

22 × 3 = 12

32 × 3 = 27

42 × 3 = 48

52 × 3 = 75

62 × 3 = 108
Discussion
18.

1). 8422). 9723). 9344). 876

Answer»

4,

4 × 3 = 12

12 × 3 = 36

36 × 3 = 108

108 × 3 = 324

324 × 3 = 972
Discussion
19.

1). 72). 1883). 574). 37

Answer»

⇒ 1 + 22 + 2 = 7

⇒ 7 + 33 + 3 = 37

⇒ 37 + 42 + 4 = 57

⇒ 57 + 53 + 5 = 187

⇒ 187 + 62 + 6 = 229

∴ Wrong number in series = 188
Discussion
20.

1). 502). 523). 564). 64

Answer»

The pattern of the given PROBLEM is:

2 + (12 – 1) = 2

2 + (22 – 1) = 5

5 + (32 – 1) = 13

13 + (42 – 1) = 28

∴ ? = 28 + (52 – 1) = 52
Discussion
21.

1). 1322). 1983). 1924). 190

Answer»

The SERIES follows the following pattern:

6 × 0.5 = 3

3 × 1 = 3

3 × 2 = 6

6 × 4 = 24

24 × 8 = 192 = ?

∴ The missing TERM is 192. $
Discussion
22.

4, 12, 28, 60, 124, ?1). 2662). 2363). 2524). 275

Answer»

⇒ 4 × 2 + 4 = 12

⇒ 12 × 2 + 4 = 28

⇒ 28 × 2 + 4 = 60

⇒ 60 × 2 + 4 = 124

⇒ 124 × 2 + 4 = 252 = ?
Discussion
23.

5, 17, 43, 89, ?1). 1692). 1503). 1614). 155

Answer»

⇒ 13 + 22 = 1 + 4 = 5

⇒ 23 + 32 = 8 + 9 = 17

⇒ 33 + 42 = 27 + 16 = 43

⇒ 43 + 52 = 64 + 25 = 89

⇒ 53 + 62 = 125 + 36 = 161 = ?
Discussion
24.

540, 547, 1100, 3305, ?1). 136242). 132143). 132244). 13524

Answer»

The pattern of the given series:

⇒ 540 × 1 + 7 = 547

⇒ 547 × 2 + 6 = 1100

⇒ 1100 × 3 + 5 = 3305

⇒ 3305 × 4 + 4 = 13224 = ?

∴ The missing NUMBER of the series = 13224
Discussion
25.

1). 1442). 923). 1284). 112

Answer»

The PATTERN of the given series is:

⇒ 16 × 0.5 - 1 = 8 - 1 = 7

⇒ 7 × 1 - 2 = 7 - 2 = 5

⇒ 5 × 2 - 4 = 10 - 4 = 6

⇒ 6 × 4 - 8 = 24 - 8 = 16

⇒ 16 × 8 - 16 = 128 - 16 = 112 = ?
Discussion
26.

12, 20, 72, ?, 89281). 1442). 5603). 44644). 2304

Answer»

12,

12 × 2 - 4 = 20

20 × 4 - 8 = 72

72 × 8 - 16 = 560 = ?

560 × 16 - 32 = 8928
Discussion
27.

5, 12, 39, 200, 1407, ?1). 3549992). 2345333). 154884). 150164

Answer»

The series FOLLOWS the following pattern:

(5 × 2) + 2 = 12

(12 × 3) + 3 = 39

(39 × 5) + 5 = 200

(200 × 7) + 7 = 1407

⇒ According to the logic the next NUMBER after 1407 is (1407 × 11) + 11 = 15488
Discussion
28.

1). 1282). 183). 984). 82

Answer»

⇒ 12 + 12 = 2

⇒ 22 + 22 = 8

⇒ 32 +32 = 18

⇒ 42 + 42 = 32

⇒ 52 + 52 = 50

⇒ 62 + 62 = 72 = wrong term

⇒ 72 + 72 = 98

⇒ 82 + 82 = 128
Discussion
29.

5, 12, 17, 29, 46, 75, 121, ?1). 1962). 1923). 1854). 188

Answer»

The PATTERN of the GIVEN series is a Fibonacci series. Every number from third number is a sum of the previous TWO numbers.

⇒ 17 = 5 + 12

⇒ 29 = 17 + 12

⇒ 46 = 29 + 17

⇒ 75 = 46 + 29

⇒ 121 = 75 + 46

⇒ 196 = 121 + 75 = ?
Discussion
30.

4, 12, 45, 196, ?1). 7642). 8443). 5764). 984

Answer»

The PATTERN of the above problem is:

Second term, 12 = 4 × 2 + 22

Third Term, 45 = 12 × 3 + 32

Fourth Term, 196 = 45 × 4 + 42

∴ FIFTH Term, ? = 196 × 5 + 52 = 1005
Discussion
31.

1). 172). 233). 554). 85

Answer»

⇒ 17 + 2 × 3 = 23

⇒ 23 + 3 × 4 = 35

⇒ 35 + 4 × 5 = 55

⇒ 55 + 5 × 6 = 85

⇒ 85 + 6 × 7 = 127

∴ Wrong number in series = 125
Discussion
32.

1). 8452). 8753). 8654). 885

Answer»

We have,

762 – 656 = 106

656 – 557 = 99

557 – 465 = 92

The difference between successive terms is decreasing by 7. Hence, the second TERM MUST be greater than the third term by 106 + 7 = 113.

So, the term is = 762 + 113 = 875
Discussion
33.

98, ?, 46, 88, 3441). 482). 233). 1964). 110

Answer»

98,

98 × 0.5 - 1 = 48

48 × 1 - 2 = 46

46 × 2 - 4 = 88

88 × 4 - 8 = 344
Discussion
34.

41472, 5184, 576, 72, 8, ?1). 02). 93). 14). 8

Answer»

The above pattern MAY be evaluated as:

→ 41472

→ 41472/8 = 5184

→ 5184/9 = 576

→ 576/8 = 72

→ 72/9 = 8

Hence the NEXT number MUST be,

→ 8/8 = 1

∴The required TERM in the given number series is 1.
Discussion
35.

4, 6, 8, 12, 12, 18, 16, ?1). 182). 303). 204). 24

Answer»

Here we have two alternate SERIES:

(4, 8, 12, 16) and (6, 12, 18, ?)

∴ ? = 24 will be the missing term.
Discussion
36.

1). 26802). 16803). 28804). 2400

Answer»

4 × 2 = 8

8 × 3 = 24

24 × 4 = 96

96 × 5 = 480

480 × 6 = 2880 = ? 
Discussion
37.

20, ?. 42, 56, 721). 402). 503). 454). 30

Answer»

42 + 4 = 20

52 + 5 = 30

62 + 6 = 42

72 + 7 = 56

82 + 8 = 72
Discussion
38.

1). 4462). 4563). 4154). 425

Answer»

4,

4 × 5 - 1= 19

19 × 4 - 1 = 75

75 × 3 - 1 = 224

224 × 2 - 1 = 447

447 × 1 - 1 = 446
Discussion
39.

700, 674, 611, 487, 272, ?1). 1702). -703). -714). 40

Answer»

The pattern of given series is:

⇒ 700,

⇒ 674 = 700 – 33 + 1,

⇒ 611 = 674 – 43 + 1,

⇒ 487 = 611 – 53 + 1,

⇒ 272 = 487 – 63 + 1,

⇒ ? = 272 – 73 + 1,

⇒ ? = -70

Thus, the missing number is - 70
Discussion
40.

1, 5, 11, 19, 29, 40, 55, 711). 402). 553). 194). 71

Answer»

The GIVEN series is in following pattern:

1

1 + 2 × 2 = 5

5 + 2 × 3 = 11

11 + 2 × 4 = 19

19 + 2 × 5 = 29

29 + 2 × 6 = 41 ≠ 40

41 + 2 × 7 = 55

55 + 2 × 8 = 71

So, the wrong term is 40.
Discussion
41.

1). 232). 223). 254). 27

Answer»

8 × 3 = 24

24 ÷ 2 = 12

12 × 3 = 36

36 ÷ 2 = 18

18 × 3 = 54

54 ÷ 2 = (27)
Discussion
42.

1). 2112). 2123). 2154). 218

Answer»

The pattern of GIVEN series is:

→3 + 7 = 10,

→10 + 10 (7 + 3) = 20,

→20 + 19 (10 + 9) = 39,

→39 + 46 (19 + 27) = 85,

→85 + 127 (46 + 81) = 212

⇒??= 212

 
Discussion
43.

1). 227202). 2593). 184). 2096

Answer»

The pattern of the given problem is:

144 = 26 × 6 – 12

590 = 144 × 4 + 14

1164 = 590 × 2 – 16

18 = 1164 × 0 + 18 = ?
Discussion
44.

17, 21, 30, 46, 71, ?1). 1052). 1073). 1004). 115

Answer»

⇒ 17 + 22 = 21

⇒ 21 + 32 = 30

⇒ 30 + 42 = 46

⇒ 46 + 52 = 71

⇒ 71 + 62 = 107

∴ Answer is 107
Discussion
45.

1). 222). 103). 214). 14

Answer»

The PATTERN of the GIVEN problem is:

9 = 20 × 0.5 - 1

8 = 9 × 1 - 1

11 = 8 × 1.5 - 1

21 = 11 × 2 - 1 = ?
Discussion
46.

1). 32). 53). 16 at 5th position4). 15

Answer»

3 = 12 × 0.25

⇒ 5 = 10 × 0.5

⇒ 8 = 8 × 1

⇒ 15 ≠ 6 ×? 2 (not following the logic USED in the series)

⇒ 16 = 4 × 4

⇒ 16 = 2 × 8

The logic is that the first number is decreasing by value 2 and the number MULTIPLIED to it, is getting doubled after each term.

∴ 15 is the wrong term in the series.
Discussion
47.

1). 162). 263). 154). 25

Answer»

⇒ 6 × 1 – 2 = 4

⇒ 4 × 2 – 2 = 6

⇒ 6 × 3 – 2 = 16 = ?

⇒ 16 × 4 – 2 = 62

⇒ 62 × 5 – 2 = 308
Discussion
48.

5000, 6655, 8640, ?, 137201). 432002). 109853). 27444). 22972

Answer»

103 × 5 = 5000

113 × 5 = 6655

123 × 5 = 8640

133 × 5 = 10985

143 × 5 = 13720
Discussion
49.

3, 5, 13, 19, 31, 41, ?1). 522). 553). 574). 61

Answer»

The pattern is as FOLLOWS;

⇒ 3 = 12 + 1 + 1

⇒ 5 = 22 + 2 - 1

⇒ 13 = 32 + 3 + 1

⇒ 19 = 42 + 4 - 1

⇒ 31 = 52 + 5 + 1

⇒ 41 = 62 + 6 - 1

⇒ 57 = 72 + 7 + 1 = ?

∴ ? = 57
Discussion