Questions
There are 10 points in a plane of which no three points are collinear and 4 points are concyclic. The number of different circles that can be drawn through at least 3 of these points is
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Correct option is C
The required number of circles = 10C3−4C3+1=117.Similar Questions
There arepoints in a plane, no two of which are in a straight line except 4, all of which are in a straight line. The number of triangles that can be formed by using these points is
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