Suppose $n \ge 3$ persons are sitting in a row. Two of them are selected at random. The probability that they are not together is

  • A

    $1 - \frac{2}{n}$

  • B

    $\frac{2}{{n - 1}}$

  • C

    $1 - \frac{1}{n}$

  • D

    None of these

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