Each of 2 urns A and B has n balls 1 to n. One ball is drawn from each of the urns. Probability that ball drawn from urn A bears a smaller number than the ball drawn from urn B, is 99/200. Value of n is?    [100]

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Please find below the solution to the asked query:

It is equally likely that the ball drawn from urn A will bear a numberlarger or smaller than that of B and the probability of eqal numbers is1n. Hencep+p+1n=12p=1-1np=n-12nAccording to questionn-12n=99200200n-200=198n2n=200n=100 Answer

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