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How many different numbers can you create out of the five digits: 1,2,3,4,5 ?

Question ID
539131

Created
April 29, 2011 4:11pm UTC

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0

URL
https://questions.llc/questions/539131

Answers
3

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293

3 answers

  1. There are 5 choices for the first digit, 4 choices for the second, 3 choices for the third, ...
    The choices are independent of each other, so we multiply the number of choices to get the count of different numbers:
    5*4*3*2*1 = ?

    Answer ID
    539154

    Created
    April 29, 2011 5:22pm UTC

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    0

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  2. The above answer assumes all 5 digits are used, and without repetition.

    Answer ID
    539156

    Created
    April 29, 2011 5:23pm UTC

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    0

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  3. another interpretation.

    single digit number = 5
    double digit number = 5x4 = 20
    triple ditit number = 5x4x3 = 60
    four digit numbers = 5x4x3x2 = 120
    five digit numbers = 5x4x3x2x1 = 120

    add them up

    Answer ID
    539172

    Created
    April 29, 2011 6:10pm UTC

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