There are two urns A and B. Urn A contains 5 red, 3 blue and 2 white balls, urn B contains 4 red, 3 blue and 3 white balls. An urn is chosen at random and a ball is drawn. Probability that the ball drawn is red is

March 30, 2022

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Maths Problems

Question : There are two urns A and B. Urn A contains 5 red, 3 blue and 2 white balls, urn B contains 4 red, 3 blue and 3 white balls. An urn is chosen at random and a ball is drawn. Probability that the ball drawn is red is

(A) 9/10

(B) 1/2

(D) 9/20

Answer : option (D)

Solution :

There are two urns A and B. Urn A contains 5 red, 3 blue and 2 white balls, urn B contains 4 red, 3 blue and 3 white balls. An urn is chosen at random and a ball is drawn. Probability that the ball drawn is red is