Choose or find odd number pair - (13 - 21) , (19 - 27) , (15 - 23) , (16 - 24)

D. 16 - 24

choose odd numeral pair/group -
( 5:50 ), ( 8:128 ), ( 11:242 ), ( 15:370 )

A. 15:370

Choose or find odd number pair - (81 - 63) , (24 - 48) , (21 - 15) , (13 - 39)

A. 81 - 63

Choose or find odd number pair - (3 - 4) , (16 - 26) , (26 - 24) , (27 - 22)

B. 16 - 26

Choose or find odd number pair - (24 - 21) , (46 - 32) , (62 - 23) , (84 - 24)

C. 62 - 23