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

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

A

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

B

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

C

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

D

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

Text Solution

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The correct Answer is:
D
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