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October 22, 2014

October 22, 2014

Posted by **Carlee** on Tuesday, January 11, 2011 at 2:35pm.

- math -
**Ms. Sue**, Tuesday, January 11, 2011 at 2:37pm**Please do not switch names -- as you've done for the last ten posts.**

- math -
**tchrwill**, Tuesday, January 11, 2011 at 7:03pmLines....Intersections

..1...........0

..2...........1

..3...........3

..4...........6

..5..........10

or N = n(n - 1)/2

- math -
**Ben**, Sunday, February 26, 2012 at 7:40pmHi

**Answer this Question**

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