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Grade 11Most Scoring Topics in IIT JEE

There are n persons and m monkeys (m>n) no of ways in which each person may become the owner of one monkey is

Profile image of vikash kr
8 Years agoGrade 11
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1 Answer

Profile image of Rishabh Ranjan
8 Years ago
The answer to this question is m-1Cn-1
By using multinomial theorem, we can find this out
a1>=1,a2>=1,a3>=1,...,an>=1
a1+a2+a3+...+an=m – n
Therefore, the no. of ways in which each person may become the owner of one monkey is = m-n+n-1Cn-1 = m-1Cn-1