# Top 10,000+ Aptitude Questions and Answers Pdf - 1

Question: 1

Insert the missing number:

16, 33, 65, 131, 261, (…..)

(A) 721

(B) 613

(C) 523

(D) 521

Ans: C

Each number is twice the preceding one with 1 added or subtracted alternately.

So, the next number is ( 2 x 261 + 1) = 523.

Question: 2

Insert the missing number:

8, 7, 11, 12, 14, 17, 17, 22, (…..)

(A) 20

(B) 22

(C) 24

(D) 27

Ans: A

There are two series ( 8, 11, 14, 17, 20) and ( 7, 12, 17, 22) increasing by 3 and 5 respectively.

Question: 3

Insert the missing number:

9, 12, 11, 14, 13, (…..), 15

(A) 10

(B) 12

(C) 16

(D) 17

Ans: C

Alternately, we add 3 and subtract 1.

Question: 4

Insert the missing number:

2, 6, 12, 20, 30, 42, 56, (…..)

(A) 60

(B) 64

(C) 70

(D) 72

Ans: D

The pattern is 1 x 2, 2 x 3, 3 x 4, 4 x 5, 5 x 6, 6 x 7, 7 x 8.

So, the next number is 8 x 9 = 72.

Question: 5

Insert the missing number:

2, 4, 12, 48, 240, (…..)

(A) 1920

(B) 1440

(C) 1080

(D) 960

Ans: B

Go on multiplying the given numbers by 2, 3, 4, 5, 6.

So, the correct next number is 1440.

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