SOLUTION: A class has 12 students. In how many different ways can the students be put into lab groups consisting of 3 students in each group?
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Question 805221: A class has 12 students. In how many different ways can the students be put into lab groups consisting of 3 students in each group?
Answer by edjones(8007) (Show Source): You can put this solution on YOUR website!
nCr=Combination= n!/((n-r)!*r!)
12C3
=12!/((12-3)!*3!)
=12*11*10*9!/9!*3*2
=4*11*5
=220 ways
.
Ed
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