A gumball machine has 21 red gumballs, 24 yellow gumballs, and 15 blue gumballs. The gumballs are randomly mixed. What is the probability that the gumball machine dispenses 2 red gumballs in a row?
The probability would be 7/59 This is because there are 69 total gum balls , and 21 are red. You have a 21/60 chance of getting red the first time, and a 20/59 chance of getting another red the second time you deepened a gum all. Now you multiply those to probabilities (21/60 x 20/59) and you get 420/3540 which simplifies to 7/59
