What is twenty five percent of two pound

Can someone me and plz do the problem

Determine domain and range, largest open interval, and intervals which function is continuous.

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