SOLUTION: A jar contains nine black buttons and two brown buttons. If nine buttons are picked at random, what is the probability that all of them are black?

SOLUTION: A jar contains nine black buttons and two brown buttons. If nine buttons are picked at random, what is the probability that all of them are black?

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Question 1106139: A jar contains nine black buttons and two brown buttons. If nine buttons are picked at random, what is the probability that all of them are black?
Answer by Boreal(15235) (Show Source): You can put this solution on YOUR website!
(9/11) for first (8/10)*7/9*6/8*5/7*4/6*3/5*2/4*1/3
This is 9!2!/(11!)=0.0182

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