Choose or find odd number pair - (21 - 49) , (24 - 64) , (25 - 54) , (81 - 36)

C. 25 - 54

Choose or find odd number pair - (1 - 0) , (3 - 8) , (6 - 35) , (7 - 50)

D. 7 - 50

Choose or find odd number pair - (121-196) , (144-225) , (36-83) , (16-49)

C. 36-83

Choose or find odd number pair - (2 - 8) , (3 - 27) , (4 - 32) , (5 - 125)

C. 4 - 32

Choose or find odd number pair - (343 - 7) , (243 - 9) , (512 - 8) , (216 - 6)

B. 243 - 9