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There are two urns Aa n dB . Urn A con...

There are two urns `Aa n dB` . 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 ball drawn is red is a.`9//10` b. `1//2` c. `11//20` d. `9//20`

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