Which of the following pairs of numbers is the odd one out?

C. (4, 6)

Select the odd pair of numbers:

A. 15, 25

Identify the odd number pair from the following options.

B. (2, 4)

Select the odd group of numbers from the following.

B. (20, 30)

Identify the odd number group from the following:

B. 2, 4, 6