Question

Pint-Sized Portraits has 5 different backgrounds and 3 poses in which to photograph children.

How many different pictures are there to choose from?

Answer 1

Think of it this way:
You have 5 separate backgrounds ... so there's five options there
And 3 ways to do it within each background...so three options in each background.

In background 1 - you can choose pose a, pose b, or pose c ... so three options in total
In background 2 - can choose pose a, pose b, or pose c... 3 options again.

See where this is going?