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#1

$Old$ November 6th, 2009, 01:32 PM

essedra $essedra is offline$

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$Question$ Please help me solving the following problem

You randomly select 5 CDs from a CD collection consisting of 3 Jazz CDs, 4 Rock CDs and 3 Classical CDs. What is the probability that your selection contains exactly 2 Jazz CDs and 3 Rock CDs?

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#2

$Old$ November 6th, 2009, 01:53 PM

Plato $Plato is offline$

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Originally Posted by essedra $View Post$

You randomly select 5 CDs from a CD collection consisting of 3 Jazz CDs, 4 Rock CDs and 3 Classical CDs. What is the probability that your selection contains exactly 2 Jazz CDs and 3 Rock CDs?

There are $\binom{10}{5}$ to select the five CD's.
There are $\binom{3}{2}\binom{4}{3}$ ways to select two jazz CD's and three rock CD'd.

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