The probability of drawing to marbles then a white one without replacement will be as follows; total number of marbles=16 total number of black marbles=7 total number of white marbles=9 probability of drawing a black marble on first=7/16 probability of drawing a black marble on second draw=6/15 probability of drawing a white marble on the 3rd draw=9/14 thus the P(B and B and W) =7/16*6/15*9/14 =9/80 the answer is 9/80