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in Mathematics by (60.8k points)
A bag contains 4 balls. Two balls are drawn at random, and are found to be white. What is the probability that all balls are white?

1 Answer

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by (52.9k points)
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Best answer

Let us define the following events.
E: drawn balls are white

A : 2 white balls in bag.
B: 3 white balls in
bag.
C: 4 white balls in
bag.
Then P(A) = P(B) = P(C) = 1/3

By applying Baye’s Theorem

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