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n points are arranged on a cirlce and all the chords drawn. Let I(n) be the number of intersection points inside the circle if no 3 chords are concurrent. Find a formula for I(n).

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    Brenda, I went through considerable time answering this question for you, and you even thanked me for it
    http://www.jiskha.com/display.cgi?id=1359819774

    Now I see you posting the same thing all over again.
    What gives?

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