Four number-pairs have been given, out of which three are alike in some manner and one is different. Select the number-pair that is different.

(547, 258)

The logic followed here is:

sum of all digits of ist number and then square of that number and we get the second number

(812, 121) → 8 + 1 + 2= 11 ⇒ 11² = 121

(547, 258) → 5 + 4 + 7= 16 ⇒ 16² = 256 (odd)

(723, 144) → 7 + 2 + 3 = 12 ⇒ 12² = 144

(546, 225) → 5 + 4 + 6 = 15 ⇒ 15² = 225