The machine has just been filled with 50 black, 150 white, 100 red and 100 yellow gum balls that have been thoroughly mixed. Sue and Jim approached the machine first. They both said they wanted red gum balls. What is the likelihood they will get their wish?
A) 0.50
B) 0.062
C) 0.33
D) 0.75
E) None of the choices are correct

Question

Quizplus · Accepted Answer

The probability of getting a red gum ball is the number of red gum balls divided by the total number of gum balls: 100 red / (50 black + 150 white + 100 red + 100 yellow) = 100/400 = 0.25. Since both Sue and Jim want red gum balls, the probability they both get red is 0.25 * 0.25 = 0.0625, which is approximately 0.062.

The Machine Has Just Been Filled with 50 Black, 150