A jar contains a mixture of 10 black balls, 8 red balls, and 2 white balls all the same size. Determine the probability of drawing either a red, black, or white ball
Probability of a certain color = number of that color / total number Therefore: probability of black balls = 10/20 = 50% probability of red balls = 8/20 = 40% probability of white balls = 2/20 = 10%
Now, the probability that the drawn ball is one of the three colors is the summation of the three probabilities: probability that the ball is one of the three colors = (10/20) + (8/20) + (2/20) = 1 = 100% (This is logical since the jar only contains these three colors. The drawn ball must be one of the three given colors)
