What is the maximum number of points of intersection that can be achieved by arranging 8 straight lines and 4 circles in the plane?
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Case-1: Two straight lines intersect
Since two straight lines can intersect at only one point, maximum possible number of such points = ( 2 8 ) = 5 6
Case-2: Two circles intersect
Since two circles can intersect at maximum of 2 points, maximum possible number of such points = 2 × ( 2 4 ) = 1 2
Case-3: One circle and one line intersect
Since one circle and one line can intersect at maximum of two points, maximum possible number of such points = 2 × ( 1 8 ) ( 1 4 ) = 6 4
Adding up, we get 6 4 + 1 2 + 2 8 = 1 0 4