In how many ways can four copies of a book be distributed among twelve people if no one gets more th

Question

In how many ways can four copies of a book be distributed among twelve people if no one gets more than one copy? In how many ways can four different books be distributed among twelve people if no one gets more than one copy? In how many ways can four different books be distributed among twelve people if each person can get any number of books? In how many ways can four copies of a book be distributed among twelve people if each person can get any number of books?

Accepted Answer

(i) ${495}$ (ii) ${118\,80}$ (iii) ${20\,736}$ (iii) ${1365}$

Prelims Revision Set: Permutation and Combinations Q2

Prelims Revision Set: Permutation and Combinations Q2

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