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Math Help - probability

  1. #1
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    probability

    one particular high school encourages students to donate blood. The high school gym is set up for this purpose.

    Type O: 44%
    Type B: 10%
    Type A: 42%
    type AB: 4%

    this is a three part question.....

    what is the probability that the first two people in the lineup have the same type of blood?

    what is the probability that none of the first five people in the lineup have type ab blood
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  2. #2
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    Quote Originally Posted by dan123 View Post
    one particular high school encourages students to donate blood. The high school gym is set up for this purpose.

    Type O: 44%
    Type B: 10%
    Type A: 42%
    type AB: 4%

    this is a three part question.....

    a) what is the probability that the first two people in the lineup have the same type of blood?

    b) what is the probability that none of the first five people in the lineup have type ab blood
    a) (\frac{44}{100})^2+(\frac{10}{100})^2+(\frac{42}{1  00})^2+(\frac{4}{100})^2

    b) (\frac{96}{100})^5
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