Posted by **Donna** on Saturday, February 11, 2012 at 2:47pm.

You have a bucket with 3 black balls and 7 red balls. What is the probability of drawing 2 reds and 1 black in 3 draws if order is not important? (Assume replacement after each draw)

- Statistics -
**bobpursley**, Saturday, February 11, 2012 at 3:25pm
ways to do this:

RRB

RBR

BRR

so three ways, then Pr= 3*7/10*7/10*3/10

- Statistics -
**Donna**, Saturday, February 11, 2012 at 3:43pm
So Bob - Final answer would be .441?

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