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 3-person teams at the next math team competition. How many different 3-person 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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