4. How many ways can you shuffle 7 songs in a playlist? A. 832,543 B. 720 C. 5040 D.49

Question

4. How many ways can you shuffle 7 songs in a playlist?
A. 832,543
B. 720
C. 5040
D.49

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Tryphena 4 years 2021-08-27T12:29:25+00:00 2 Answers 23 views 0

Answers ( )

  1. diemthu
    0
    2021-08-27T12:30:38+00:00
    Reply

    Answer:

    5040

    Step-by-step explanation:

    7×6×5×4×3×2×1=5040

  2. trungdung22
    0
    2021-08-27T12:31:00+00:00
    Reply

    Answer:

    5040

    Step-by-step explanation:

    There are 7 options for the 1st song, 6 options for the 2nd song, 5 options for the 3rd song, 4 options for the 4th song, 3 options for the 5th song, 2 options for the 6th song, and 1 option for the 7th song. We get:

    7 *6*5*4*3*2*1 = 5040

    (Note: when you have a number n, where it is multiplied by every number until one (ex. 7.     7*6*5*4*3*2*1), then the number in the result is n! (n factorial). So we get that 7*6*5*4*3*2*1 is 7! is 7 factorial. So 5040 is 7! )

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