Posted by **B.B.** on Friday, August 7, 2009 at 3:41pm.

Could someone please let me know if I did this problem right?

A bag contains seven blue marbles and five red marbles. One marble is drawn at random without replacement, and then a second marble is drawn. What is the probability that the second marble is blue if the first marble was blue?

I say 6/11, is this right?

Thanks.

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