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Grace M.

asked • 07/25/18

Please show all your work out

There are 5 mathematics,4physics and 5 chemistry books. In how many ways can you arrange 4 mathematics, 3 physics and 4 chemistry books:
{i}: If the books on the same subjects are arranged together, but the order in which the books are arranged within a subject doesnt matter.
{ii}:If books on the same subjects are arranged together and the order in which books are arranged within subject matters.

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