word problem help

Question

five friends are having a tennis tournament. Each friend will play the other four friends want five friends are having a tennis tournament. Each friend will play the other for friends once. how many matches will be played?

Answer 1

Name them A, B, C, D, and E.

A plays four games (B, C, D, and E)

B plays three games (C, D, and E)

C plays two games (D and E)

D plays one game (E)

 

How many games is that?