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anonymous

  • 5 years ago

a collection of elevlopes consists 2 red,3 blue,1 green and 3 yellow. if 3 evelopes are selected at ramdom, without replacement, determine the prbl that they are all yellow evelopes

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  1. anonymous
    • 5 years ago
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    since there is 3 is it 3 and then u add all those other ones?

  2. anonymous
    • 5 years ago
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    find total number of envelopes

  3. anonymous
    • 5 years ago
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    9

  4. anonymous
    • 5 years ago
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    3/9 2/8 1/7 since you are not replacing the ones you select

  5. anonymous
    • 5 years ago
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    so 3/9?

  6. anonymous
    • 5 years ago
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    think you multiply those 3

  7. anonymous
    • 5 years ago
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    so what would it come out too?

  8. anonymous
    • 5 years ago
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    3/9*2/8*1/7=1/84

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