| Question | Select the set in which the numbers are related in the same way as are the numbers of the following set. (3, 21, 4) | |
| Type | multiple_choice | |
| Option | (2, 16, 3) | incorrect |
| Option | (4, 21, 3) | correct |
| Option | (5, 20, 4) | incorrect |
| Option | (2, 16, 4) | incorrect |
| Solution | (4 + 3) × 3 = 21 | |
