SOLUTION: given a class with 8 boys and 6 girls if you pick 3 students at random what is the probability of picking a group of 3 boys? And Picking a group of 2 girls and 1 boy.
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Question 444761: given a class with 8 boys and 6 girls if you pick 3 students at random what is the probability of picking a group of 3 boys? And Picking a group of 2 girls and 1 boy.
Answer by edjones(8007) (Show Source): You can put this solution on YOUR website!
nCr=Combination of n things taken r at a time=n!/((n-r)!*r!)
8C3/14C3
=56/364
=2/13
.
(8C1)(6C2)/14C3
=8*15/364
=120/364
=30/91
.
Ed
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