Cody bagged the plastic bottles after a recycling drive. he placed 15 bottles in the first bag, 90 bottles in the second bag, 360 bottles in the third bag, and 720 bottles in the fourth bag. what kind of sequence is this?

Fracisco's game involves 3 green, 2 yellow, 4 red, and 3 black marbles. if he randomly draws three marbles from the bag, without replacement, what is the probability that he will draw yellow, and then red, and then black? a)1/192 b)1/72 c)3/220 d)1/55