Four set of numbers are given out of which three are alike in a certain way and one is different. Select the set of numbers that is different from the rest.

Four set of numbers are given out of which three are alike in a certain way and one is different. Select the set of numbers that is different from the rest. Correct Answer 13 – 39 – 143

The pattern followed here is:

Option 1: 17 – 51 – 153 → 17, 17 × 3 (51), 17 × 9 (153);

Option 2: 15 – 45 – 135 → 15, 15 × 3 (45), 15 × 9 (135);

Option 3: 18 – 54 – 162 → 18, 18 × 3 (54), 18 × 9 (162);

Option 4: 13 – 39 – 143 → 13, 13 × 3 (39), 13 × 9 (117 ≠ 143);

All follow the same pattern, except ‘13 – 39 – 143’

Hence, ‘13 – 39 – 143’ is the different set.