SOLUTION: You must select a committee of 3 from 12 students. How many different committees can be formed?

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Question 707914: You must select a committee of 3 from 12 students. How many different committees can be formed?
Found 2 solutions by jim_thompson5910, thomasianstudent001:
Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!
There are 12*11*10 = 1320 different ways to choose 3 students from 12 assuming order matters.

If order doesn't matter, then there are 1320/3! = 1320/6 = 220 ways to form the committee.

I'm assuming that each member has an equal role and title. So this would mean that order doesn't matter. If you add titles like president, vice president, etc, then order would matter.

Answer by thomasianstudent001(2) About Me  (Show Source):
You can put this solution on YOUR website!
since the keyword is "select" you're gonna have to use combination. n!/(n-r)!r!
12!/9!3! = 220