Two groups

The group of 10 girls should be divided into two groups with at least 4 girls in each group. How many ways can this be done?

Correct answer:

n =  462

Step-by-step explanation:

C4(10)=(410)=4!(104)!10!=432110987=210  C5(10)=(510)=5!(105)!10!=54321109876=252  n=(410)+(510)=462

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