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Let n be an integer n leq 3. let p1,p2...

Let n be an integer `n leq 3`. let `p_1,p_2,.......,p_n` be a regular n-sided polygon inscribed in a circle. Three points `p_i,p_j ,p_k` are randomly chosen, where `i, j, k` are district integer's between 1 and n.If `p(n)` denotes probability that `Deltap_i p_j p_k` is obtuse angle triangle then which of the following are correct?

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