Posted by Cassie on Wednesday, February 20, 2013 at 9:33am.
If there are 3 green marbles and 4 blue marbles in a box, what is the probability that a blindfolded person would pick a blue marble?

math  JJ, Wednesday, February 20, 2013 at 9:37am
You have 4 chances out of 7 of getting a blue marble.