Choose or find odd number - 51 , 144 , 64 , 121 , 256

A. 51

Choose or find odd number pair - (46 - 10) , (42 - 33) , (20 - 38) , (12 - 91)

D. 12 - 91

Choose or find odd word - Rhinoceros , Lion , Deer , Ass , Cow

D. ASS

Choose or find odd pair of words - (Beautician : Parlour) , (Chemist : Medicine) , (Lawyer : Court) , (Engineer : Site)

B. CHEMIST : MEDICINE

Choose or find odd word - Bromine , Mercury , Copper , Silver

A. BROMINE