Question

A students wants to arrange 3 economics history and 4 english books on a shelf if the books on the same subject are different find

Answer 1

Number of economic history books = 3

Number of English books = 4

Since all books different from each other, we can take total books = 3+4 = 7

So we have to arrange 7 unique books.

Total number of ways to do it = 7! = 5040

So the books can be arranged in 5040 ways.

Answer 2

Hey !!

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All the books are unique so ways to arrange = ( 3 + 4 ) ! = ( 7 ) ! = 5040

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