Glass jar contains 6 red, 4 green, 3 blue, and 5 yellow marbles. if a single marble is chosen at random from the jar, what is the probability that it is blue or green?
So the total number of marbles is 18(6+4+3+5) right? So we have 4 green and 3 blue marbles. So together we have 7 marbles that we want to get right? Now 7/18 is the chance that this will happen. So ans:7/18
