Answer:
5/12
Step-by-step explanation:
1/3+1/4
common denominators
1/3=4/12
1/4=3/12
3/12+4/12=7/12
It is asking what is the probability of the green ball, so you find the entire possibility of picking all balls and subtract that by the possibility for the blue and red ball. that is 12/12-7/12=5/12
