| 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 | 64: 100: 18 | incorrect |
| Option | 25: 16: 9 | incorrect |
| Option | 16: 64: 12 | incorrect |
| Option | 81: 9: 19 | correct |
Solution:
