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?1/33/42/33/41/7
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?
1/3
3/4
2/3
3/4
1/7
Solution
The problem is asking for the probability of drawing either a red or a white ball.
Step 1: Determine the total number of outcomes. There are 5 red balls, 5 blue balls, and 5 white balls for a total of 15 balls.
Step 2: Determine the number of favorable outcomes. There are 5 red balls and 5 white balls for a total of 10 favorable outcomes.
Step 3: Calculate the probability. 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 of drawing a red or white ball is 10/15 = 2/3.
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