Correct Answer: Option A
Total number of balls = (8 + 7 + 6) = 21.
Let E = event that the ball drawn is neither red nor green
= event that the ball drawn is blue.
So, n(E) = 7.
Therefore, P(E) = n(E)/ n(S) = 7/21 = 1/3
Download our app for free and access thousands of MCQ questions with detailed solutions