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There are 15 points in a plane. No three...

There are 15 points in a plane. No three points are collinear except 5 points. How many different straight lines can be formed?

A

105

B

95

C

96

D

106

Text Solution

Verified by Experts

The number of lines that can be formed from n points in which m points are collinear is `.^(n)C_(2)-.^(m)C_(2)+1`.
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