Eleven books consisting of 5 math ,4 physics and 2 chemistry are placed in shelf.The number of possible ways of arranging them on the assumption that the books of the same subject are all together?
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Step-by-step explanation:
There are 11 books
5 maths books can be placed in 5! ways = 120
4 physics books can be placed in 4! ways = 24
2 chemistry books can be placed in 2! ways = 2
TOTAL = 5760 ways,also
There can be rotation of the three set of books in 3! ways i.e. 5760×6 =34560 ways
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