If a ball is drawn at random from a box containing 5 red, 5 blue and 5 white balls, what is the probability that the ball drawn is red or white?
Question
If a ball is drawn at random from a box containing 5 red, 5 blue and 5 white balls, what is the probability that the ball drawn is red or white?
Solution
Step 1: Identify the total number of outcomes. In this case, the total number of balls is 5 (red) + 5 (blue) + 5 (white) = 15 balls.
Step 2: Identify the number of favorable outcomes. The question asks for the probability of drawing a red or white ball. So, the favorable outcomes are 5 (red) + 5 (white) = 10 balls.
Step 3: The probability of an event is given by the ratio of the number of favorable outcomes to the total number of outcomes. So, the probability (P) of drawing a red or white ball is 10/15 = 2/3.
So, the probability that the ball drawn is red or white is 2/3.
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