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31 December, 17:36

a band has 7 new songs and wants to put 5 of them on a demo cd. how many different arrangements of 5 songs are possible?

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  1. 31 December, 18:15
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    2520 arrangements

    Step-by-step explanation:

    There are 7 songs.

    There are 5 songs in the demo CD.

    You have a choice of any of the 7 songs for the first song.

    Then you are left with 6 choices for the second song.

    After that, you have 5 choices for the third song.

    And it goes on.

    Number of arrangements

    = 7 x 6 x 5 x 4 x 3

    = 2520
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