Posted by jenny on Saturday, May 19, 2012 at 11:10pm.
Ralph, Mario, Jack, Laura, and Maria are in the math club. The club advisor will assign students to 3person teams at the next math team competition. How many different 3person teams can be formed from these five students?
I got this wrong...here was my answer
5*4*3/(2*1) 60/2 30 teams combination

algebra 2  Steve, Saturday, May 19, 2012 at 11:15pm
C(5,3) = (5*4*3)/(1*2*3) = 20
There are 5*4*3 ways to arrange the students, but if the order doesn't matter, all 3! orderings involve the same people.

algebra 2  jenny, Saturday, May 19, 2012 at 11:24pm
Thank you!!!!

algebra 2  Cullen, Sunday, May 19, 2013 at 8:39pm
Uh... (5*4*3)/(1*2*3) = 10
...doesn't it? Google and my calculator say so xD
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