ProbabilityHard
Question
There are two urns. There are m white & n black balls in the first urn and p white & q black balls in the second urn. One ball is taken from the first urn & placed into the second. Now, the probability of drawing a white ball from the second urn is:
Options
A.
B.
C.
D.
Solution
A ball from first urn can be drawn is two mannars
ball is white or ball is black
P(w) =
P(B) = 
Let E → selecting a white ball from second urn after a ball from urn first has been placed into it
P(E) = P(w) P(E/W) + P(B) P(E/B)
ball is white or ball is black
P(w) =
P(B) = Let E → selecting a white ball from second urn after a ball from urn first has been placed into it
P(E) = P(w) P(E/W) + P(B) P(E/B)
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