An urn contains 5 white and 10 black balls. A fair die is rolled and that number of balls is randomly chosen from the urn. What is the probability that all of the balls selected are white? What is the conditional probability that the die landed on 3 if all the balls selected are white?
A- ll of the choose balls are white
Since the die is fair:
If the die rolls i we choose a combination of i balls, among black and five white balls, therefore
A-event that all balls drawn are white
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