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.

54 : 152 82 : 236 36 : 98 68 : 196

68 : 196

The logic followed here is : ist number × 3 - 10 = second number 54 : 152  ⇒ 54 × 3 - 10 = 152 82 : 236 ⇒ 82 × 3 - 10 = 236 36 : 98 ⇒ 36 × 3 - 10 = 98 68 : 196 ⇒ 68 × 3 - 10 = 194 ≠ 196 (odd)