Question

At a restaurant a menu has 5 salads and 6 entrees. How many ways can you order a dinner that contains 1 salad and 1 entree?

Answer 1

Answer: 30

Explanation:

The combination of n things taking r at a time is given by :-

`^nC_r=(n!)/(r!(n-r)!)`

Given : At a restaurant a menu has 5 salads and 6 entrees.

Then, the number of ways you can order a dinner that contains 1 salad and 1 entree will be :_

`^5C_1* ^6C_1\\\\=5*6=30`

Hence, the number of ways you can order a dinner that contains 1 salad and 1 entree = 30