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18 May, 12:34

In how many ways can you arrange the numbers 4, 5, 6, and 7 to make a three-digit number? List the permutations

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Answers (2)
  1. 18 May, 13:08
    0
    456

    457

    465

    467

    475

    476

    546

    547

    564

    567

    574

    576

    645

    647

    654

    657

    674

    675

    745

    746

    754

    756

    764

    765

    That good? Or does it include double numbers like 445 ...
  2. 18 May, 15:25
    0
    Permutaions aka slot method

    1st slot has 4 possibiliies

    2nd slot has 3 since 1 in 1st slot

    3rd has 2

    multily

    4*3*2=24

    24 possibilities

    456

    457

    467

    465

    476

    475

    546

    547

    567

    564

    576

    574

    647

    645

    654

    657

    674

    675

    745

    746

    756

    754

    765

    764
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