A bag contains 2 black balls , 3 red balls and 6 white balls. A ball is picked from the bag at random. What is the probability that it is a. Black b. Red c. White d. Not red e. Not black
a. The probability of picking a black ball is 2/11. (There are 2 black balls out of a total of 11 balls.)
b. The probability of picking a red ball is 3/11. (There are 3 red balls out of a total of 11 balls.)
c. The probability of picking a white ball is 6/11. (There are 6 white balls out of a total of 11 balls.)
d. The probability of not picking a red ball is 1 - 3/11 = 8/11. (There are 8 balls that are not red out of a total of 11 balls.)
e. The probability of not picking a black ball is 1 - 2/11 = 9/11. (There are 9 balls that are not black out of a total of 11 balls.)