In how many ways can five different mathematics books three


Question: (a) In how many ways can five different mathematics books, three different physics books, and four different chemistry books be arranged on a shelf?

(b) Repeat (a) if all books of the same subject are to be together.

(c) [BB] Repeat (a) if three of the five mathematics books are the same.

(d) Repeat (c) if, in addition, all the physics books are the same.

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Mathematics: In how many ways can five different mathematics books three
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