A box B1 contains 1 white ball, 3 red balls and 2 black balls. Another box B2 contains 2 white balls, 3 red balls and 4 black balls. A third box B3 contains 3 white ball, 4 red balls and 5 black balls. If one ball is drawn from each of the boxes B1,B2 and B3, the probability that all three drawn balls are of the same colour is

A box B1 contains 1 white ball, 3 red balls and 2 black balls. Another

1.	A box B1 contains 1 white ball, 3 red balls and 2 black balls. Another box B2 contains 2 white balls, 3 red balls and 4 black balls. A third box B3 contains 3 white ball, 4 red balls and 5 black balls. If one ball is drawn from each of the boxes B1,B2 and B3, the probability that all three drawn balls are of the same colour is
Answer» A box $B_{1}$ contains 1 white ball, 3 red balls and 2 black balls. Another box $B_{2}$ contains 2 white balls, 3 red balls and 4 black balls. A third box $B_{3}$ contains 3 white ball, 4 red balls and 5 black balls. If one ball is drawn from each of the boxes $B_{1}, B_{2}$ and $B_{3}$ , the probability that all three drawn balls are of the same colour is