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Question

In how many ways can 12 things be divided equally among 4 persons?

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Solution

As there are 12 things that needs to be divided amongst 4 people, so each person would get 3 things.
Number of ways of selecting 3 things out of 12 things for 1st person = 12C3=220 ways.
Number of ways of selecting 3 things out of 9 things for 2nd person = 9C3=84 ways.
Number of ways of selecting 3 things out of 6 things for 3rd person = 6C3=20 ways.
Number of ways of selecting 3 things out of 3 things for 4th person = 3C3=1 way.
Hence, total number of ways =220×84×20=369600 ways.

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