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Box A has exactly four red buttons and eight blue buttons. Jack then removes the same number of red buttons as blue buttons from Box A and places them in an empty Box B. Box A now has 2/3 of its original number of buttons. If Jack were now to randomly choose a button from Box A and a button from Box B, what is the probability that the two chosen buttons will both be red? (Expressed in a common fraction)

 Oct 7, 2020
 #1
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The probability is 5/8.

 Oct 7, 2020

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