Let \( \mathrm{m} \) denote the number of ways in which 4 different...

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Let \( \mathrm{m} \) denote the number of ways in which 4 different books are distributed among 10 persons, each receiving none or one only and let \( \mathrm{n} \) denote the number of ways of distribution if the books are all alike.
\( \mathrm{P} \) Then :
(A) \( m=4 n \)
(B) \( n=4 m \)
(C) \( m=24 n \)
(D) none
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