Find the probability of choosing two green balls

Reference no: EM13130815

1. An urn contains 21 balls identical in every aspect except color. There are 7 green, 13 red balls and 1 white ball in the urn.

a. If you draw a ball, record the color, replace it then draw a second, what is the probability of choosing two white balls?

b. If you draw a ball, record the color then draw a second without replacing the first ball, what is the probability of choosing two green balls?

Reference no: EM13130815

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