Suppose n ( >=3) persons are sitting in ...

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) nonoe of these

`1-2/n`

`2/(n-1)`

`1-1/n`

`(n-3)/n`

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