December 1, 2015

Homework Help: statistics

Posted by Koala on Thursday, August 7, 2014 at 12:13pm.

A jar contains 2 red balls, 2 blue balls, 2 green balls and 1 orange ball. Balls are randomly selected, without replacement, until 2 of the same colour are obtained. Calculate the probability that more than 3 balls must be selected.

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