D.11 42. A box contain 10 Black balls, 7 White balls and 12 Red balls. A ball is draw What is the probability that the ball drawn is either Black or White? A. 16/25 B 17/29 15/25 D 12/15

To find the probability that the ball drawn is either Black or White, we need to calculate the total number of favorable outcomes (drawing a Black or White ball) and divide it by the total number of possible outcomes (drawing any ball from the box).<br /><br />The total number of favorable outcomes is the sum of the number of Black balls and the number of White balls, which is 10 + 7 = 17.<br /><br />The total number of possible outcomes is the sum of the number of Black balls, White balls, and Red balls, which is 10 + 7 + 12 = 29.<br /><br />Therefore, the probability that the ball drawn is either Black or White is 17/29.<br /><br />So, the correct answer is B. $17/29$.