| Question | Select the set in which the numbers are related in the same way as are the numbers of the following set. (15, 22, 31) | |
| Type | multiple_choice | |
| Option | (7, 14, 23) | correct |
| Option | (5, 11, 20) | incorrect |
| Option | (23, 30, 40) | incorrect |
| Option | (11, 18, 29) | incorrect |
| Solution | 15+31 =46/2=23-1 =22 7+23=30/2=15-1 =14 | |
