Bball tournament, 8 teams play eachother once
What's the number of games in tournament?
Aside from making a list counting out the possibilities,
How can you quickly figure this out, and what is the reasoning behind it?
(8 teams) *(7 "each team can play this # teams" )* (1 game/2 teams)
so 28 is answer, which is the same i get when making a list of all the possibilities by hand.
but am not sure what 7 exactly refers to--
Looks like the number of other teams each team could play against.
What would you describe it as? (what it is called doesnt seem to "cancel out" here--but what is it called anyways)
PLease let me know what you think !! thanx