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There are 15 points in a plane , no thre...

There are 15 points in a plane , no three of which are in a st line , except 6 , all of which are in a st. line The number of st lines , which can be drawn by joining them is :

A

`""^(5)C_2-6`

B

`""^(15)C_2-""^6C_2`

C

`""^(15)C_2-""^6C_2-1`

D

`""^(15)C_2-""^6C_2+1`

Text Solution

Verified by Experts

The correct Answer is:
D
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