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Lite |
| Category: | Series |
| Submitted By: | shenqiang |
| Fun: |  (1.69) |
| Difficulty: | (3.03) |
| Show Hint | Show Answer |
| Posted by jasmin215 | 11/02/07 |
| WOOHHHOOOOO!!! that was extra hard! i gave up :lol: never learned that in school, well, you learn something new everyday :wink: | |
| Posted by pating | 11/08/07 |
| Almost impossible to solve for me. I even dont get the arithmetic sequence at first glance. :lol: | |
| Posted by mrguyguy | 12/27/07 |
| so freaking hard :lol: | |
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