Choose or find odd number pair - (16 - 64) , (9 - 36) , (36 - 216) , (49 - 343)

B. 9 - 36

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

C. 25 - 54

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

C. 4 - 32

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

C. 36-83

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

B. 243 - 9