A total of 15 basketballs, including 4 Brand A, 6 Brand B,

Last updated: 7/21/2022

A total of 15 basketballs, including 4 Brand A, 6 Brand B, and 5 other brand-name balls, are on a basketball court. Barry closes his eyes and arbitrarily picks up a ball from the court. Determine the probability that the ball selected is not a Brand B ball. The probability that the ball is not a Brand B is