There are 15 points in a plane of which 8 of them are on a straight line..then how many 1) straight lines can be formed
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On the x y plane, there are 8 points of which 4 are collinear. How many straight lines can be formed by joining any 2 points from the 8 points ? 8 points total - 4 are collinear (lie along a straight line) and 4 are non-collinear. a) All the collinear points lie on a straight line - 1 line can be drawn through them
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