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There are 12 points in a plane such that 3,4,5 of them are respectively on the sides AB,

There are 12 points in a plane such that 3,4,5 of them are respectively on the sides AB, BC, CA of the triangle ABC. (i) How many triangles can be formed by joining these 12 points? (ii) What is the probability that 3 points selected at random from these points form a triangle?

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Видео There are 12 points in a plane such that 3,4,5 of them are respectively on the sides AB, канала Lucca Weber
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