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avatar+4 

A bridge hand consists of 13 cards. How many bridge hands include 5 cards from one suit, 6 from the second, and 2 cards from the third? I did 13c5x13c6x13c2 and got 172 million something which isnt the right answer.

 Sep 30, 2016
 #1
avatar+2511 
+6

You seem to have the right idea; you just need to multiply each combination by the available number of suits.  As each suit is selected, there is one less suit to consider. 

 

 

\(\binom{13}{6} \cdot (4) \cdot \binom{13}{5} \cdot (3)\ \cdot \binom{13}{2} \cdot (2) \\\\ \text { } \\ = 4,134,297,024 \text { Combinations}\)

 

 

GA

 Sep 30, 2016
 #2
avatar+118687 
0

Yes, I think that Ginger is correct.  Does your book's answer agree with Ginger's answer ?

 Sep 30, 2016

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