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Mathematics, 05.05.2020 22:33 nurikchan

Lou has the first 4 encyclopedias lined up on a shelf, A, B, C, and D. If he picks two at random, what is the probability that he picks A first and B second?

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Lou has the first 4 encyclopedias lined up on a shelf, A, B, C, and D. If he picks two at random, wh...
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