A bag contains 3 red marbles, 2 green ones, 1 fluorescent pink one, 2 yellow ones, and 2 orange ones. Suzy grabs 4 at random. Find the probability of the event: "She gets all the red ones, given that she gets the yellow one."

Question

anonymous · Answer

Total marbles = 10
P(3 red given one yellow), assuming "gets the yellow one" means one yellow, correct?

anonymous · Answer

Or do you mean she gets both yellow?

anonymous · Answer

yeah i've got that so far and she only gets one yellow

anonymous · Answer

I got 1/5. How? 3/10+2/10*1/10