Aptitude - Odd Man Out and Series

Exercise :: Odd Man Out and Series - Odd Man Out

Find the odd man out.
6. 

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.

7. 

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.

8. 

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.


9. 

10, 14, 16, 18, 21, 24, 26

A. 26
B. 24
C. 21
D. 18

Answer: Option C

Explanation:

Each of the numbers except 21 is an even number.

10. 

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.