Aptitude

Question:
835, 734, 642, 751, 853, 981, 532

[A].

751

[B].

853

[C].

981

[D].

532

Answer: Option A

Explanation:

In each number except 751, the difference of third and first digit is the middle one.

Question: 396, 462, 572, 427, 671, 264
[A].

396

[B].

427

[C].

671

[D].

264

Answer: Option B

Explanation:

In each number except 427, the middle digit is the sum of other two.

Question:
8, 27, 64, 100, 125, 216, 343

[A].

27

[B].

100

[C].

125

[D].

343

Answer: Option B

Explanation:

The pattern is 23, 33, 43, 53, 63, 73. But, 100 is not a perfect cube.

Question:
1, 4, 9, 16, 20, 36, 49

[A].

1

[B].

9

[C].

20

[D].

49

Answer: Option C

Explanation:

The pattern is 12, 22, 32, 42, 52, 62, 72. But, instead of 52, it is 20 which to be turned out.

Question:
10, 25, 45, 54, 60, 75, 80

[A].

10

[B].

45

[C].

54

[D].

75

Answer: Option C

Explanation:

Each of the numbers except 54 is multiple of 5.

Question:
16, 25, 36, 72, 144, 196, 225

[A].

36

[B].

72

[C].

196

[D].

225

Answer: Option B

Explanation:

Each of the numbers except 72 is a perfect square.

Question:
41, 43, 47, 53, 61, 71, 73, 81

[A].

61

[B].

71

[C].

73

[D].

81

Answer: Option D

Explanation:

Each of the numbers except 81 is a prime number.

Question:
6, 9, 15, 21, 24, 28, 30

[A].

28

[B].

21

[C].

24

[D].

30

Answer: Option A

Explanation:

Each of the numbers except 28, is a multiple of 3.

Question:
1, 4, 9, 16, 23, 25, 36

[A].

9

[B].

23

[C].

25

[D].

36

Answer: Option B

Explanation:

Each of the numbers except 23, is perfect square.

Question: 3, 5, 11, 14, 17, 21
[A].

21

[B].

17

[C].

14

[D].

3

Answer: Option C

Explanation:

Each of the numbers except 14 is an odd number.

The number ’14’ is the only EVEN number.