Question

Use: nCk = n!/k! (n-k)!

At a local cafeteria there are ten vegetable selections available. How many three-vegetable plates may be made

Answer 1

120

Explanation:

The formula
`nCk=(n!)/(k!(n-k)!)` describes how many ways
`k` items can be chosen given
`n` total items. In this scenario,
`n=10`, and
`k=3`, thus:

`(10!)/(3!(10-3)!)=120`

This means that you can make 120 three-vegetable plates