Math

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How many ways can 9 cars be parked in a row of 9 parking spaces?
Answer: 81 ways
Is this correct?
Thanks for your help.

  • Math -

    No. I would look at the factorial.

  • Math -

    I think that I see what I did wrong.
    Should it be 9*8*7*6*5*4*3*2*1?
    Thanks.

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