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6 November, 00:01

Assume there are 6 grey females, 4 grey males, 5 white females, and 5 white males. As in the book, the biologist selects two mice randomly.

What is the probability of selecting two males given that both are grey?

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Answers (2)
  1. 6 November, 00:03
    0
    There are 2 grey males each
  2. 6 November, 00:13
    0
    6+4+5+5=20

    Total:20

    5/20 = x/100

    Cross multiply:

    500 = 20x

    500/20 = 25

    25/100 = 25%

    Answer:25% probability
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