Mary has a pink dress, a blue dress, and a yellow dress. She has a black pair of shoes and a white pair. How many dress and shoe outfits can she make?

There are two ways to solve this.

The first way is logically.

Mary can

-wear a pink dress with black shoes - wear a pink dress with white shoes

-wear a blue dress with black shoes - wear a blue dress with white shoes

-wear a yellow dress with black shoes - wear a yellow dress with white shoes

Count them up, and you'll get six combinations!

Another way is simply mathematically, which is easier in my opinion.

3 (different colored dresses) * 2 (different colored shoes) = 6 (combos)