A bag contains 5 white and 3 black balls, and two balls are drawn at random. What is the probability that both are of the same color?
There are two boxes, containing 5 white balls and 5 black balls and 4 white and 10 black balls respectively. 6 balls are randomly taken out of the first box and put in the second. Then one ball is drawn out of the second. How do I find the probability that it will be white?