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October 23, 2014

October 23, 2014

Posted by **tyler** on Friday, May 6, 2011 at 3:13pm.

10, 20, 40, . . .

- arithmetic -
**Writeacher**, Friday, May 6, 2011 at 3:37pmIt seems to double each time. Which one is the "nth" term?? Work it out.

- arithmetic -
**nel**, Monday, May 23, 2011 at 10:04amfind the sum of these arithmetic series

13+24+35+...+156

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