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There are m persons sitting in a row. Tw...

There are m persons sitting in a row. Two of the mare selected at random. The probability that the two selected persons are together

A

`(2)/(n)`

B

`1- 2//n`

C

`(n (n-1))/((n + 1) (n + 2))`

D

None of these

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The correct Answer is:
B
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