actinglife742 actinglife742

21-10-2022
Mathematics

contestada

there are 7 balls in a bag, numbered as {1,2,...,7}. caro randomly picks a ball from the bag. if the ball is no. 1, he puts it back in the bag and immediately picks a random ball again (only on the first try). otherwise, he keeps the first result. what is the probability that he finishes with ball no. 2?

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