A set is any well-defined collection of objects called elements.

A null set contains 1 element.

The intersection of two sets is a set whose elements are those which belong to both sets.

A set is a subset of itself.

Finite set contains a countable number of elements.

Equal set contains the same number of elements.

For sets to be called equivalent, they must have the same elements.

Subset of a set contains the element of a given set.

A positive times a positive number, the answer will be?

A negative number times a positive number

(-4)(4)

7/8 - 7/12

2.5 x 2 =