| Question | Select the number-pair in which the two numbers share a different relationship from in that shared by the two numbers the rest of the number-pairs. | |
| Type | multiple_choice | |
| Option | (16, 112) | incorrect |
| Option | (17, 119) | incorrect |
| Option | (18, 128) | correct |
| Option | (15, 105) | incorrect |
| Solution | (16, 112) = (16, 16 × 7) (17, 119) = (17, 17 × 7) (18, 128) = (18, 18 × 7 + 2) (15, 105) = (15, 15 × 7) Hence, option C is different. | |
