Competition

15 boys and 10 girls are in the class. On school competition of them is selected 6-member team composed of 4 boys and 2 girls. How many ways can we select students?

Correct result:

n =  61425

Solution:

C4(15)=(154)=15!4!(154)!=151413124321=1365  C2(10)=(102)=10!2!(102)!=10921=45  n=(154) (102)=1365 45=61425



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