Question

Some urns contain 4 white and 6 blue balls while one urn contains 5 white and 5 blue balls. One urn is chosen at random from there and 2 balls are drawn from it and both are found to be black. The probability that 5 white and 3 black balls remain in the chosen urn is 1/7 . The total number of urns is

(A)4 (B)5 (C)6 (D)7

Please write the process...

Answer 1

Step-by-step explanation:

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