Which of the following groups is different from the others?

A. 1, 2

Which of the following numbers is the odd one out?

C. 10

Find the odd number pair from the list below.

A. 21, 27

Identify the number that does not belong to the group.

D. 60

Choose the odd number pair: (3, 5), (7, 11), (13, 15), (17, 19)

C. (13, 15)