Question

A library has a copies of one book, b copies of each of two
books, c copies of each of three books, and single copies of
d books. The total number of ways in which these books can
be distributed is
(a) (a + b + c + d) !/(a ! b ! c !)
(b) (a + 2 b + 3 c + d) !/(a ! (b !)² (c !)³)
(c) (a + 2 b + 3 c + d)/(a ! b ! c !)
(d) none of these

Answer 1

Answer:

hiii

ans:b

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Answer 2

Answer:

Hello Brainly user....!!♡

(b) (a + 2 b + 3 c + d) !/(a ! (b !)² (c !)³)