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A jar contains 28 marbles. It has 10 red, 8 black and 10 green marbles. Two marbles are drawn, the first is not returned before the second one is drawn. What is the probability …

A jar contains 28 marbles. It has 10 red, 8 black and 10 green marbles. Two marbles are drawn, the first is not returned before the second one is drawn. What is the probability …
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A jar contains 28 marbles. It has 10 red, 8 black and 10 green marbles. Two marbles are drawn, the first is not returned before the second one is drawn. What is the probability that both marbles are green?

asked
User Todd Li
by
7.8k points

1 Answer

3 votes
P(green) first drawn:
10/28=5/14
P(green) second drawn:
9/27=1/3
As a result, probability that both marbles are green is 5/42. Hope it help!
answered
User Khusamov Sukhrob
by
8.7k points
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