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Mathematics, 30.07.2019 07:30 quickestlearner6171

You have 20 shirts in your closet. 4 blue, 7 red, 3 green and 6 black. you pick one without looking. what is the probability that you pick a blue or black shirt?

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You have 20 shirts in your closet. 4 blue, 7 red, 3 green and 6 black. you pick one without looking....
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