A purse contains n coins of unknown values .A coin is drawn from it at random and is found to be a rupee .Then the chance that it is the only rupee coin in the purse is
A. 1/(n+1)
B. 2/22
C.2/n(n+1)
D.1/n(n+1)

Number of coins = nIf 1 coin is drawn then probability of drawing it from n coin = 1nNow probability of drawing rest of the n-1 coin fromn coin = n-1nBut after this we cannot find the asked because we have not sufficient data.

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