Mathematics, 25.04.2020 01:40 Random4422

Ten points labeled A, B, C, D, E, F, G, H, I, J are arranged in a plane in such a way that no three lie on the same straight line. (a) How many straight lines are determined by the ten points? 109734912000 Incorrect: Your answer is incorrect. (b) How many of these straight lines do not pass through point A? (c) How many triangles have three of the ten points as vertices? (d) How many of these triangles do not have point A as a vertex?

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