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23-10-2019
Mathematics

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Consider a collection of envelopes consisting of 3 red envelopes, 3 blue envelopes, 3 green envelopes, and 3 yellow envelopes. If three envelopes are selected at random, without replacement, determine the probability that at least one envelope is a green envelope.

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hailey7378 hailey7378

23-10-2019

3/10 x 2/9 x 1/8=1/120

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