In a certain match all the teams were to play with each other. If there are 15 teams, how many matches will have to be played? Pick:	A) 120	B) 105	C) 110	D) 90	E) None of the above
15c2   =105   ANSWER:105
<result>B</result>
In a certain match all the teams were to play with each other. If there are 15 teams, how many matches will have to be played?