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math

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Compute the maximum number of intersections of 17 straight lines.

  • math -

    Please do not switch names -- as you've done for the last ten posts.

  • math -

    Lines....Intersections
    ..1...........0
    ..2...........1
    ..3...........3
    ..4...........6
    ..5..........10

    or N = n(n - 1)/2

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