You have a bag with 20 marbles 2 yellow 5 green 12 red and 1 blue which of the following statements are true? Select all that apply. a) The probability of choosing a yellow, green, red, or blue marble is 1 b) The probability of choosing a yellow marble is less than the probability of choosing a blue marble c) The probability of choosing a green marble is 0.25 d) The probability of choosing a black marble is zero

An event has probability 1 if you're certain that it will happen. You are sure to pick a marble that's either yellow, green, red, or blue. So, this probability is 1.There are more yellow marbles than blue marbles, so it's actually more likely that you'll pick a yellow one, rather than the blue one.The probability of picking a green marble is given by the number of green marbles divided by the total number of marbles. Compute this ratio and see what you get.Similarly, the probability of picking a black marble is given by the number of black marbles divided by the total number of marbles. There are no black marbles, so...

Just divide the x axis (the top) by 2 or multiply the y axis (the bottom) by 2