marble probability

[bettysanchez]

In a bag of marbles, there are 5 red marbles, 7 blue marbles and 10 yellow marbles. Three marbles are pulled out, one at a time, and set in a row on the carpet. What is the probability that you pull, in order, a blue then a yellow and then a red marble?

 

[Steven G]

Nice problem. What have you tried? please post back showing your work so that we know what help you need.