A bag contains 3 yellow tennis balls and 4 green tennis balls. Gordy will select one tennis ball, put it in his pocket, and then select a second tennis ball. What is the probability he will get two green tennis balls?

1 Answer
Will
Jul 17, 2016

#~~.29#

Explanation:

okay so total tennis balls is 7. But after he draws 1 we are left with 6 so this is a type of sampling without replacement. The probability of selecting a green on the first draw is #p(x=green) = 4/7# then the next draw is #3/6# if he did draw the first one green. so #4/7*3/6 = 2/7 ~~.29#

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