There are 10 boxes in a grab bag boxes are identical except for its at 7 of them contain $20 bills a contest winner gets too pick two boxes from the grab bag which is the probability of getting two $20 bills

Well if you draw 1 boxes u have 7/10 chances to get a 20$ box and the second draw has a chance of 6/9 thats if u got a 20$ on the first box if not it's 7/9 so the anwser would be 7/15 because u have to add the remaining boxes to the overall total also