In a certain match all the teams were to play with each other. If there are 5 teams, how many matches will have to be played?	Pick one:	A) 40	B) 45	C) 60	D) 10	E) None of the above
5c2   =10   ANSWER:10
<result>D</result>
In a certain match all the teams were to play with each other. If there are 5 teams, how many matches will have to be played?