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

Four pairs of numbers are given out of which three are alike in a certain way and one is different. Select the pair of numbers that is different from the rest. Correct Answer 58 - 144

The pattern followed is:

Square of sum of digits of 1^st term = 2^nd term

Option 1 → 42 – 36 → 4 + 2 = 6² = 36

Option 2 → 74 – 121 → 7 + 4 = 11² = 121

Option 3 → 91 – 100 → 9 + 1 = 10² = 100

Option 4 → 58 – 144 → 5 + 8 = 13² = 169 ≠ 144

All follow same pattern except ‘58 - 144’

Hence, ‘58 - 144’ is the different pair.