Top 10,000+ Aptitude Questions and Answers - 1

Question: 1

Find out the wrong number in each sequence:
16, 32, 64, 81, 100, 144, 190

(A) 36

(B) 81

(C) 100

(D) 190

Ans: D

Each number is the square of a composite number except 190.

Question: 2

Find out the wrong number in each sequence:
22, 33, 69, 99, 121, 279, 594

(A) 594

(B) 279

(C) 121

(D) 33

Ans: B

Each number except 279 is a multiple of 11.

Question: 3

Find out the wrong number in each sequence:
10, 14, 28, 32, 64, 68, 132

(A) 28

(B) 32

(C) 68

(D) 132

Ans: D

Alternately, we add 4 and double the next.

So, 132 is wrong. It must be ( 68 x 2) i.e., 136.

Question: 4

Find out the wrong number in each sequence:
1, 8, 27, 64, 124, 216, 343

(A) 8

(B) 27

(C) 64

(D) 124

Ans: D

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

Question: 5

Find out the wrong number in each sequence:
105, 85, 60, 30, 0, - 45, - 90

(A) 85

(B) 60

(C) -45

Ans: D

Subtract 20, 25, 30, 35, 40, 45 from successive numbers. So 0 is wrong.

Error Report!

Related Questions