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18-04-2018
Mathematics

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The radio station manager will reward a free stereo to a contest winner. There are 20 black stereos, 15 white stereos, 10 red stereos, and 5 silver stereos to chose from. What is the probability that the stereo randomly selected by the contest winner is NOT white?

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18-04-2018

35/50 = 0.7 is the answer

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