Between 72924

How many ways do we know to select three cards from a deck of seven cards so that there are two red and one green between them?

Correct answer:

p =  0.0452

Step-by-step explanation:

C3(32)=(332)=3!(323)!32!=321323130=4960  n1=(332)=4960 C2(8)=(28)=2!(82)!8!=2187=28  n2=(28) 8=28 8=224  p=n1n2=4960224=1557=0.0452



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