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anonymous

  • 5 years ago

11 pictchers, 7 infielders, and 12 other players. if 3 players are selected at ramdom, determine the probl that all 3 are infliders

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  1. anonymous
    • 5 years ago
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    OK so we start off the same way!

  2. anonymous
    • 5 years ago
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    Yes, you can do this, it is just like the other two...

  3. anonymous
    • 5 years ago
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    7/30?

  4. anonymous
    • 5 years ago
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    for the first selection, yes, now what for the second? (remember that one infielder is removed by you choosing him.

  5. anonymous
    • 5 years ago
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    6/29

  6. anonymous
    • 5 years ago
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    right, then the third selection...

  7. anonymous
    • 5 years ago
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    5/28

  8. anonymous
    • 5 years ago
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    okay, now multiply...

  9. anonymous
    • 5 years ago
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    so u do 30 times 29 times 28?

  10. anonymous
    • 5 years ago
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    cancel first... it's easier

  11. anonymous
    • 5 years ago
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    then 6 times 5 times 4?

  12. anonymous
    • 5 years ago
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    I mean 7,6 and 5?

  13. anonymous
    • 5 years ago
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    (7*6*5)/(30*29*28) ...the 6*5 cancels with the 30, making it easier

  14. anonymous
    • 5 years ago
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    ...=7/(29*28)

  15. anonymous
    • 5 years ago
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    oh, wait keep canceling...

  16. anonymous
    • 5 years ago
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    7/28 = 1/4 so 7/(28*29) = 1/(4*29)

  17. anonymous
    • 5 years ago
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    what?

  18. anonymous
    • 5 years ago
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    7 times 6 times 5 is 210

  19. anonymous
    • 5 years ago
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    yes, but it is easier to cancel before you multiply than to multiply then reduce

  20. anonymous
    • 5 years ago
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    so what would it be when u cancel 210/2?

  21. anonymous
    • 5 years ago
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    do you want to wrangle with reducing 210/24360?

  22. anonymous
    • 5 years ago
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    210/24360 = 1/116

  23. anonymous
    • 5 years ago
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    116?

  24. anonymous
    • 5 years ago
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    Great job on figuring out the probability part, we only got hung up on the arithmetic. When is the quiz?

  25. anonymous
    • 5 years ago
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    Well I am doing h/w now and then next week he usually gives us the quiz like after monday

  26. anonymous
    • 5 years ago
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    then we have a week to work on it

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