Group combinations

The group has 12 red girls and 25 blue girls in costumes. How many of them can we put together a group of 6 girls so that the four girls have red outfits?

Final Answer:

n =  74250

Step-by-step explanation:

C2(25)=(225)=2!(252)!25!=212524=300 C4(12)=(412)=4!(124)!12!=43211211109=495  n1=(412)=495 n2=(6425)=300  n=2n1 n2=2495 300=74250



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