Select all properties that the set of odd whole numbers is closed under.

A. Addition

B. Subtraction

C. Multiplication

D. Division

Select all that apply

The set of odd whole numbers is closed under multiplication. It is a fact that multiplying odd numbers always produces odd number. The performance of multiplication on members of the set always give same set and here is an example. Multiplication of 9 x 3 = 27, here we multiply two odd number and the result is another odd number. Moreover, addition, subtraction and division is not closed under odd number.