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user80551
  • Member for 10 years, 8 months
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14 votes
16 answers
8k views

How much can you quickly multiply?

15 votes
7 answers
2k views

Calculate cell-phone keypresses

0 votes
5 answers
404 views

highest common factor-fewest iterations [closed]

3 votes
4 answers
298 views

Line-wrap into proper columns

2 votes
0 answers
131 views

Cell-phone golf [duplicate]