Question 4 (8 points) A bag contains ten black marbles, twenty white marbles, and five grey marbles. You pick one withou
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Question 4 (8 points) A bag contains ten black marbles, twenty white marbles, and five grey marbles. You pick one withou
Question 4 (8 points) A bag contains ten black marbles, twenty white marbles, and five grey marbles. You pick one without looking. What is the probability that the marble will be either white OR black?
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