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3 July, 16:30

How many different ways are there to arrange 12 books on shelf

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  1. 3 July, 16:47
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    You can arrange the 9 normal books in 9 ways, creating 10 slots where one of the three common books may be placed.

    Step-by-step explanation:

    There are 10⋅9⋅8 ways to choose different slots for those three books. The total number of allowable arrangements therefore is 9!⋅720=261273600
  2. 3 July, 16:57
    0
    6 ways
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