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January 30, 2015

January 30, 2015

Posted by **preet** on Monday, July 16, 2012 at 5:16am.

P(three red balls)=

P(two red and one white)=

P(one red and two white balls)=

P(three white balls)=

- finite math -
**Reiny**, Monday, July 16, 2012 at 8:53amYou didn't say if the balls are returned, but in most of these type of questions, they would not be returned

I will assume they are not returned to the box.

Prob(3 red) = (10/14)(9/13)(8/12) = ...

Prob(2 red, one white)

could be RRW, RWR, WRR

prob = 3(10/14)(9/13)(4/12) = ....

Study my method I used above, then apply the same method to the last two.

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