nellyyyy1 nellyyyy1

25-06-2017
Mathematics

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In how many ways can 10 different compact disc be arranged on a shelf

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mathmate mathmate

25-06-2017

Start from the left, there are 10 discs available.
At the second position, there is a choice of 9 discs,
....
On the right, there is only one disc left.
So the total number of ways = 10*9*8*...2*1=10!=3628800

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