Answer:
Total number of balls equals 14
Probability of 1 red ball = 7 / 14
Probability of second red ball = 6 / 13
Probability of third red ball = 5 / 12
Total probability = 7 / 14 * 6 / 13 * 5 / 12
Total = 1/2 * 6/13 * 5/12
Common denominator = 312
Total = (1 * 6 * 5) / 312) = 30 / 312 = .096
One can enter fractions into a calculator and get the same result.
