Mathematics, 25.10.2019 22:43, chuchi24

An urn contains six red balls and four green balls. a sample of seven balls is selected at random.

find the probability that five red and two green balls are selected.

find the probability that all balls selected are red.

find the probability that at least four red balls are selected.

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An urn contains six red balls and four green balls. a sample of seven balls is selected at random. <...