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anonymous

  • 5 years ago

the sales force a bussiness consists 10 men and 10 women. a production unit of 7 people are choosen at ramdon. what is the prob it will include 2 men and 5 women?

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  1. anonymous
    • 5 years ago
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    didnt I already answer this? do you know permutations and combinations?

  2. anonymous
    • 5 years ago
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    I meant do you understand permutations and combinations?

  3. anonymous
    • 5 years ago
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    Go back to previous time you asked this, I gave more explanation on dhatraditya's work

  4. anonymous
    • 5 years ago
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    now wat

  5. anonymous
    • 5 years ago
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    This is probably the 10th question on this subject you've asked about, and it doesn't seem like you're any closer to learning what you need to know to solve these on your own.. Maybe you should actually spend some time reading the book? \[\frac{{10 \choose 2} * {10 \choose 5}}{20 \choose 7}\]

  6. anonymous
    • 5 years ago
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    i got that up to the ending but then i come w the decinmal

  7. anonymous
    • 5 years ago
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    yes, probabilities are between 0 and 1 and typically decimals

  8. anonymous
    • 5 years ago
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    (10C2*10C5)/(20C7) = 45*252/77520= 1134/7752 = 567/3876 = 189/1

  9. anonymous
    • 5 years ago
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    189/1? how did you get that?

  10. anonymous
    • 5 years ago
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    and then do u devide all them ?

  11. anonymous
    • 5 years ago
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    i have no idea what you are talking about.

  12. anonymous
    • 5 years ago
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    how do u get the answer?

  13. anonymous
    • 5 years ago
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    What you have above is correct except the last fraction.

  14. anonymous
    • 5 years ago
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    ok now what?

  15. anonymous
    • 5 years ago
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    the end? If you want a decimal approximation you could plug that fraction into your calculator

  16. anonymous
    • 5 years ago
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    all them?

  17. anonymous
    • 5 years ago
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    they're all the same fraction (except the 189/1 which I have no idea where it came from)

  18. anonymous
    • 5 years ago
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    so i would devide all those numbers? or?

  19. anonymous
    • 5 years ago
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    1134/7752. use your calculator to do that division. the answer will be a decimal number. that is your answer.

  20. anonymous
    • 5 years ago
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    6.835978835

  21. anonymous
    • 5 years ago
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    so would the answer be 6.84?

  22. anonymous
    • 5 years ago
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    oh come on! what is 1134 divided by 7752?

  23. anonymous
    • 5 years ago
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    0.1462848

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