Arrange these letters of each group to make a meaningful word and then find the odd one out.

Correct Answer: R N J F

Explanation:

Except option (b) rest all has vowel

Correct Answer: 44 - 31

Explanation:

Except 44 - 31, the difference of the remaining pairs are perfect squares.

Correct Answer: 96 : 80

Explanation:

104 :78 = 104/26 : 78/26
=4 : 3
64 : 48 = 64/16 : 48/16
= 4 :3
80 : 60 = 80/20 : 60/20
= 4 : 3
But, 96 :80 = 96/16 : 80/16
= 6 : 5
The odd is 96 : 80 because its ratio is 6 : 5 but rest of ratio is 4 : 3.

Correct Answer: KQNN

Explanation:

1 2 3 4 5 6
A B C D E F
D = 4, W = 4 (from backward count)
F = 6, U = 6 (From backward)
Similarly, K = 11, Q = 10

Correct Answer: 97

Explanation:

Remaining numbers are composite.

Correct Answer: 8 - 15

Explanation:

8(3 + 5) -------- 15(3 x 5)
25 = (5)² ----------- 36 = (6)²
49 = (7)² ------------ 64 = (8)²
81 = (9)² ----------- 100 = (10)²

Correct Answer: 6514

Explanation:

Only in option (c) the last numbers (i.e., both end numbers are not same).

Correct Answer: President

Explanation:

President is the only person, who does not represent any house or parliament.

Correct Answer: 65

Explanation:

Except option (c) rest all are perfect squares.

Correct Answer: Scarab

Explanation:

Except option (c) all are mammal whereas scarab is an insect.