A bag contains 5 blue balls, 3 red balls and 2 green balls. If a ball is drawn at random from the bag, what is the probability that the ball drawn is not green?
Answer
Step 3: Now, the probability of the complement of an event is given by 1 minus the probability of the event. So, the probability that the ball is not green is given by \(1 - 0.2 = 0.8\).
Step 1 ：Step 1: Calculate the total number of balls in the bag. This is given by the sum of the blue balls, red balls, and green balls. So, we have \(5 + 3 + 2 = 10\) balls.
Step 2 ：Step 2: We're looking for the probability that the ball drawn is not green. This is the complement of the event that the ball is green. There are 2 green balls out of a total of 10 balls. So, the probability that the ball is green is given by \(\frac{2}{10} = 0.2\).
Step 3 ：Step 3: Now, the probability of the complement of an event is given by 1 minus the probability of the event. So, the probability that the ball is not green is given by \(1 - 0.2 = 0.8\).
