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A box contains 2 white, 3 red, and 4 black marbles. you choose two marbles and each are chosen at random. find the probability that: 1. both marbles are black? 2. one marble is …
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A box contains 2 white, 3 red, and 4 black marbles. you choose two marbles and each are chosen at random. find the probability that: 1. both marbles are black? 2. one marble is …
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Jan 2, 2019
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A box contains 2 white, 3 red, and 4 black marbles. you choose two marbles and each are chosen at random. find the probability that:
1. both marbles are black?
2. one marble is white and the other is black?
3. one marble is white and the other is not black?
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2 black marbles:
1 white, 1 black:
1 white, 1 non-black (this means you draw either 2 white, or 1 white and 1 red; we add the events' probabilities because they are disjoint events):
SBel
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Jan 9, 2019
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SBel
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