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A bag contains five red marbles and two blue marbles.

Quinn draws two marbles at random from the bag without replacement. Afterwards, they put any blue marbles they drew back into the bag, and then redraws marbles until they once again have two marbles. What is the probability they now have two red marbles?

 Oct 9, 2022
 #1
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The probability is 3/40.

 Oct 10, 2022

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