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1. A jar contains 3 black and 2 white marbles. We continue to draw marbles one...

1. A jar contains 3 black and 2 white marbles. We continue to draw marbles one at a time until two black marbles are drawn. If a white marble is drawn, the outcome is recorded, and the marble is put back in the jar before drawing the next marble. What is the probability that we will get exactly two black marbles in at most three tries? Do this problem using a tree diagram! (2 marks)
math   Statistics-And-Probability   
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