A box contains 4 green, 5 red and 6 white balls. Three balls are drawn randomly.
What is the probability that the balls drawn are of different colours?
a) 24/91
b) 67/91
c) 21/91
d) 70/91
e) 3/13
What is the probability that the balls drawn are of different colours?
a) 24/91
b) 67/91
c) 21/91
d) 70/91
e) 3/13