| 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 | 16 – 3 | incorrect |
| Option | 50 – 7 | incorrect |
| Option | 51 – 25 | incorrect |
| Option | 64 – 32 | correct |
| Solution | 16 ÷ 3 ⇒ Remainder = 1 50÷ 7 ⇒ Remainder = 1 51÷ 25 ⇒ Remainder = 1 64 ÷ 32 ⇒ Remainder = 0 | |
