Problema Solution
A bum ball machine has 12 white gum balls, 1 purple gum ball, 3 green gum balls, and 6 pink gum balls. You put a coin into the machine and get one gum ball. What is the probability of getting a green or purple gum ball?
Answer provided by our tutors
Total numbers of gum balls= 12+1+3+6=22
Probability of getting a green or purple gum ball= (3/22)(1/22)= 3/484