Question

A recipe has 6 ingredients, how many ways can you arrange the first 4 ingredients?

Answer 1

See below:

Explanation:

I'm not sure I understand the question, but here we go. Because of the uncertainty, I'll answer two ways:

If the question is asking about how we can add the first 4 ingredients in a recipe (and therefore the other 2 ingredients get added later), we get:

`4! = 24` ways

If the question is asking in how many ways we can add 4 ingredients first from a list of 6, then that's:

`6xx5xx4xx3=(6!)/(2!)=P_(6,2)=360`

(where `P_(6,2)` is the permutation notation I use to indicate 6 permute 2)