Question

Can someone help me? It's urgent and thank you!

Answer 1

380 ways

Explanation:

Here, we want to use permutations to know the number of ways

mathematically, we have the general formula as;

nPr = n!/(n-r)!

In this case, we have 20 P 2

= 20!/(20-2)! = 20!/18! = 380