There are n points in a plane of which '...

There are n points in a plane of which 'p' points are collinear. How many lines can be formed from these points

`""^(n)C_(2)-""^(p)C_(2)+1`

`""^(n)C_(2)-""^(p)C_(2)`

`n-""^(p)C_(2)`

`""^(n)C_(2)-""^(p)C_(2)-1`

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