4. An urn contains 80 Blue marbles and 20 Yellow marbles. Let B and Y represent the event of drawing each respective colored marble. Find the following probabilities. a. The experiment is draw one marble. P(B) = %D b. The experiment is draw two marbles with replacement. Р(ВПY) %3 c. The experiment is draw two marbles without replacement. P(B then Y)

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