(16 - 64) , (9 - 36) , (36 - 216) , (49 - 343)
Option:
Justification: All other pairs contain square and cube of the same number. e.g. 36 = 6² & 216 = 6³.

(16 - 64) , (9 - 36) , (36 - 216) , (49 - 343)
Justification: All other pairs contain square and cube of the same number. e.g. 36 = 6² & 216 = 6³.