Question

You own 6 hats and are taking 2 on vacation. In how many ways can you choose 2 hats from the 6?

Answer 1

15 options. Go in order from hat 1 & hat 2, hat 1 & hat 3, and so on, and order doesn't matter, so continue on to hat 2 & hat 3, hat 2& hat 4, etc.