Aptitude

Question: 56, 72, 90, 110, 132, 150
[A].

72

[B].

110

[C].

132

[D].

150

Answer: Option D

Explanation:

The numbers are 7 x 8, 8 x 9, 9 x 10, 10 x 11, 11 x 12, 12 x 13.

So, 150 is wrong.

Question:
6, 13, 18, 25, 30, 37, 40

[A].

25

[B].

30

[C].

37

[D].

40

Answer: Option D

Explanation:

The differences between two successive terms from the beginning are 7, 5, 7, 5, 7, 5.

So, 40 is wrong.

Question:
5, 16, 6, 16, 7, 16, 9

[A].

9

[B].

7

[C].

6

[D].

None of these

Answer: Option A

Explanation:

Terms at odd places are 5, 6, 7, 8 etc. and each term at even place is 16.

So, 9 is wrong.

Question:
1, 8, 27, 64, 124, 216, 343

[A].

8

[B].

27

[C].

64

[D].

124

Answer: Option D

Explanation:

The numbers are 13, 23, 33, 43 etc. So, 124 is wrong; it must have been 53i.e., 125.

Question: 46080, 3840, 384, 48, 24, 2, 1

[A].

1

[B].

2

[C].

24

[D].

384

Answer: Option C

Explanation:

The terms are successively divided by 12, 10, 8, 6, …etc.

So, 24 is wrong, it should be 8 (48/6 = 8).

Question:
582, 605, 588, 611, 634, 617, 600

[A].

634

[B].

611

[C].

605

[D].

600

Answer: Option A

Explanation:

Alternatively 23 is added and 17 is subtracted from the terms. So, 634 is wrong.

Question:
36, 54, 18, 27, 9, 18.5, 4.5

[A].

4.5

[B].

18.5

[C].

54

[D].

18

Answer: Option B

Explanation:

The terms are alternatively multiplied by 1.5 and divided by 3. However, 18.5 does not satisfy it.

Question:
22, 33, 66, 99, 121, 279, 594

[A].

33

[B].

121

[C].

279

[D].

594

Answer: Option C

Explanation:

Each of the number except 279 is a multiple of 11.

Question: 2, 5, 10, 17, 26, 37, 50, 64

[A].

50

[B].

26

[C].

37

[D].

64

Answer: Option D

Explanation:

(1*1)+1 , (2*2)+1 , (3*3)+1 , (4*4)+1 , (5*5)+1 , (6*6)+1 , (7*7)+1 , (8*8)+1

But, 64 is out of pattern.

Question: 331, 482, 551, 263, 383, 362, 284
[A].

263

[B].

383

[C].

331

[D].

551

Answer: Option B

Explanation:

In each number except 383, the product of first and third digits is the middle one.