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anonymous

  • 5 years ago

A cooler contains 8 cans of soda's, 5 cokes,2 orange and 1 cherry. Two cans are slected at random without replacement. Find the probality that at leats one can is a coke. The prob that one can is a coke is?

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  1. dumbcow
    • 5 years ago
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    Look at probability that none are cokes can 1: 3/8 because 3 cans are not cokes can 2: 2/7 you already took a non-coke leaving 2 out of the 7 remaining cans P(none) = 3/8*2/7 = 6/56 = 3/28 so P(at least 1) = 1 - 3/28

  2. anonymous
    • 5 years ago
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    8C2 = 28 means there are 28 possible ways to select two cans. Out of those selections, 3 selections do not contain a coke = 25/28, which is also 5 squared (5 cokes, 2 chances) over 8C2.

  3. anonymous
    • 5 years ago
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    so 25/28?

  4. dumbcow
    • 5 years ago
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    yes

  5. anonymous
    • 5 years ago
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    yes

  6. anonymous
    • 5 years ago
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    r u guys like math teachers or something? u guys know everything!

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