Inside the bag contains large balls and the conditions are the same: 6 red balls, 4 white balls, and 8

blue ball. Five balls are drawn randomly; what is the probability:

a. Exactly 3 balls in red, if the return is WR

b. Exactly 3 red balls, if the return is WOR

c. If 5 balls are drawn by WR, the composition is 2 red, 2 white and 1 blue

d. If 5 balls are drawn in WOR, the composition is 2 red, 2 white and 1 blue