SA box contains three red balls and seven blue. Two balls are drawn at random. Define the sample space and find the probability of events when: 1The first ball is replaced before the second is drawn. 2The first ball is not replaced before the second is drawn. 6A ball is drawn from a box containing 4 red balls, 5 blue and 6 green. What is the probability that the ball will be red or white? What is the probability that it is blue? 7in a class there are 10 blonde girls, 20 brunette girls, 5 blonde boys and 10 brown-haired boys. If all 45 students attend class on a particular day, find the probability that a student selected at random will be: 1A boy. 2A brunette girl. 3A boy or girl. 8A die is rigged so that the probabilities of obtaining the different faces are proportional to the numbers on the faces (For example: A five is five times more likely to be rolled than a one). Find: 1The probability of obtaining a 6.