A blue urn a yellow urn The blue urn contains 3 blue balls

A blue urn & a yellow urn. The blue urn contains 3 blue balls and 1 yellow ball. The yellow urn contains 5 yellow balls and 1 blue ball.

a) suppose you choose a random ball from the yellow urn, what is the probablity that the second ball drawn is yellow?

b) find the probabilty such that both balls drawn are in different colors?

Solution

(a)

P = 5/6* (4/5) + (1/6)*1 = 5/6

(b)

P =(5/6)*(1/5) + (1/6) *1 = 2/6