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[" 22.Suppose "n(>=3)" persons are sitti...

[" 22.Suppose "n(>=3)" persons are sitting in a row.Two of them "],[" are selected at random.The probability that they are not "],[" together is "],[[" (a) "1-(2)/(n)," (b) "(2)/(n-1)," (c) "1-(1)/(n)" (d) none of these "]]

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