There are different 20 circles. What is the number of the greatest possible points with which the circles intersect?\nOptions:\n(A) 380\n(B) 200\n(C) 110\n(D) 180\n(E) 200 Hmmm, my stream of consciousness:
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Maximum points of intersection between n different circles = n*(n - 1) = 20*19 = 380 So, the answer is (A).
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