| Question | Select the set of numbers that is similar to the following set of numbers. (6, 14, 22) | |
| Type | multiple_choice | |
| Option | (7, 13, 20) | incorrect |
| Option | (5, 15, 28) | incorrect |
| Option | (2, 6, 9) | incorrect |
| Option | (12, 15, 18) | correct |
| Solution | 6 + 22 = 14 × 2 12 + 18 = 15 × 2. | |
