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A container contains 2 red, 3 white, and 5 yellow balls. Suppose that once a ball is drawn it is not replaced. What is the probability that 2 red balls will be drawn in 2 tries?

2007-03-30 09:53:42 · 1 answers · asked by Anonymous in Science & Mathematics Mathematics

1 answers

(2/10)*(1/9)

possible ways of taking a red ball the first time is 2 ways , divided this by the total possible ways of taking any ball.

next given that one ball is taken, think again :
possible ways of taking 1 red ball ( there is only one red left ) out of 9 balles

2007-03-30 09:57:47 · answer #1 · answered by gjmb1960 7 · 2 0

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