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mathmath333

  • one year ago

counting problem

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  1. mathmath333
    • one year ago
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    que:- In how many ways can 4 red, 3 yellow and 2 green discs be arranged in a row if the discs of the same colour are indistinguishable ?

  2. anonymous
    • one year ago
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    4 x 3x 2

  3. anonymous
    • one year ago
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    so 24

  4. anonymous
    • one year ago
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    wait!!!!!!!!

  5. mathmath333
    • one year ago
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    lol no answer is 1260

  6. anonymous
    • one year ago
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    i knew it!!!!!!

  7. anonymous
    • one year ago
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    it didnt seem right lol

  8. anonymous
    • one year ago
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    how did u get that lol?

  9. anonymous
    • one year ago
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    @mathmath333

  10. mathmath333
    • one year ago
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    from back of the book

  11. anonymous
    • one year ago
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    lmao wow

  12. anonymous
    • one year ago
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    so u dont know how to do it?

  13. mathmath333
    • one year ago
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    yep

  14. anonymous
    • one year ago
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    u do or dont?

  15. anonymous
    • one year ago
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    lol this dude bocked me cause i fanned him

  16. mathmath333
    • one year ago
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    i am also struggling to understand the meaning of sentence "arranged in a row if the discs of the same colour are indistinguishable"

  17. geerky42
    • one year ago
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    This means you can't tell the difference between two discs of same color, so saying we have #1 green disc and #2 green disc. 1 2 in order is same as 2 1. As in there is only one way to arrange #1 and #2 disc.

  18. mathmath333
    • one year ago
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    ok i see the key meaning

  19. IrishBoy123
    • one year ago
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    4 red, 3 yellow and 2 green that's \(\large \frac{9!}{4! \ 3! \ 2!} \)

  20. mathmath333
    • one year ago
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    that equals 1260

  21. mathmath333
    • one year ago
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    thnx

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