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immanuelv

  • 5 years ago

how many 5 digit numbers can be formed using all the digits 0,1,2,3,4 without repetition?

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  1. Owlfred
    • 5 years ago
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  2. anonymous
    • 5 years ago
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    24

  3. anonymous
    • 5 years ago
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    0x1x2x3x4

  4. immanuelv
    • 5 years ago
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    that would be "0"

  5. anonymous
    • 5 years ago
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    ignore the 0, thats how you do it right?

  6. anonymous
    • 5 years ago
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    4!

  7. anonymous
    • 5 years ago
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    i meant 4!

  8. immanuelv
    • 5 years ago
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    well... this uses combination or permutation... i'm not sure... but answer my friend got was 96

  9. anonymous
    • 5 years ago
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    but theres no repeats, so its a permutation

  10. anonymous
    • 5 years ago
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    i got 120 now

  11. immanuelv
    • 5 years ago
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    well then could it be.... 1*4*4*3*2??

  12. anonymous
    • 5 years ago
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    or would it be 1*2*3*4*5 because there are five digits

  13. anonymous
    • 5 years ago
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    its not thenumbers that are important, but the digits and the fact they dont repeat

  14. immanuelv
    • 5 years ago
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    but isnt that saying that there is 5 ways to put the last number?

  15. immanuelv
    • 5 years ago
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    well then three is but the number cannot repeat!

  16. anonymous
    • 5 years ago
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    the way i was taught was to draw out 5 lines, and figure out how many numbers can fill each space/ _ _ _ _ _ 5 can fill the first space because we have 5 digits that cann be used. the next space would be 4 because we cannot reuse the letter we used in the first space and so on making it 5*4*3*2*1

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