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17 November, 11:14

Only 4% of people have Type AB blood.

a. On Average, how many donors must be checked to first find someone with Type AB blood?

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Answers (1)
  1. 17 November, 14:28
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    25

    Explanation:

    If only 4% of all people have blood type AB, that's 4/100 or 1/25. So, one in each 25 donors, on average, will be type AB.
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