How many straight lines can be formed with 6 points, no three of which are collinear
25
15
30
20
A
25
B
20
C
15
D
30
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Solution
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The correct option is C15 There are 6 points , no three of which are collinear.
For making straight lines 2 non -collinear points are required.
Number of straight lines =6C2=15
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