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If a bowl contains only white and black balls, what is the probability of extracting a white ball from the bowl?
(1) There are twice as many white balls as black balls in the bowl
(2) If two balls are extracted from the bowl, the probability that both of them will be black is 0.
[spoiler]OA=A[/spoiler]
Source: GMAT Club Tests
(1) There are twice as many white balls as black balls in the bowl
(2) If two balls are extracted from the bowl, the probability that both of them will be black is 0.
[spoiler]OA=A[/spoiler]
Source: GMAT Club Tests
