Choose or find odd number - 21 , 39 , 51 , 63 , 83

E. 83

Choose or find odd pair of words - (Bottle : Wine) , (Cup : Tea) , (Pitcher : Water) , (Ball : Bat) , (Inkpot : Ink)

D. BALL : BAT

Choose or find odd word - Snake , Whale , Crocodile , Lizard

B. WHALE

Choose or find odd number pair - (42 - 4), (36 - 6), (32 - 2), (15 - 5)

A. 42 - 4

Choose or find odd letter group - DAH , IFM , ROV , QNT , SPW

D. QNT