Which of the following pairs is different from the rest?

D. 5, 9

Choose the pair that does not belong to the same category.

D. 20, 35

Which group of numbers is different from the others?

D. 5, 7, 9

Which pair of numbers is the odd one out?

C. 4, 6

Identify the odd number pair from the following options.

B. 12, 18