5.Suppose that there are five identical bowls, which are labeled 1, 2, 3, 4 and 5. Bowl t contains t red and 5-1
blue balls, with t= 1, 2, 3, 4 and 5. A bowl is randomly chosen and two balls are randomly selected without
replacement from the contents of the bowl.
【題組】(2) Given that both balls selected are red, find the probability that bowl 3 was chosen? (15%)