Question

Use: Ck = k! (n-k)!

n!
n k
to solve the combination.
How many ways can you
choose steak, fish, or chicken if you
can only choose two meats?

Answer 1

3 ways.

Explanation:

Combinations formula:

`C_(n,x)` is the number of different combinations of x objects from a set of n elements, given by the following formula.

`C_(n,x) = (n!)/(x!(n-x)!)`

In this question:

2 meats from a set of 3(steak, fish or chicken). So

`C_(3,2) = (3!)/(2!1!) = 3`

3 ways.