| Question | Four number-pairs have been given, out of which three are alike in some manner and one is different. Select the number- pair that is different. | |
| Type | multiple_choice | |
| Option | 126 | incorrect |
| Option | 91 | incorrect |
| Option | 196 | incorrect |
| Option | 169 | correct |
Solution: Except (d) all other are multiple of 7.
