Question

Three of the given options are alike in a certain way. However, one option is not like the other three. Select the option which is different from the others.
1. 49
2. 63
3. 77
4. 81

Answer 1

Correct Answer - Option 4 : 81

The logic followed is:

All the number except option (4), is exactly divisible by 7 whereas 81 is not exactly divisible by 7.

Option 1: 49

It is exactly divisible by 7.

Option 2: 63

It is exactly divisible by 7.

Option 3: 77

It is exactly divisible by 7.

Option 4: 81

It is not exactly divisible by 7.

Hence, the correct answer is "81".