markell42
markell42
23.06.2019 • 
Mathematics

Aball is drawn at random from an urn containing one red and one white ball. if the white ball is drawn, it is put back into the urn. if the red ball is drawn, it is returned to the urn together with two more red balls. then a second draw is made. what is the probability a red ball is drawn on both the first and the second draws

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