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03:31, 27 June 2011 (hist) (diff) Euler problems/41 to 50‎ (→Problem 43: Both other solutions take >20 seconds. This takes <0.1 seconds..)
12:12, 26 June 2011 (hist) (diff) Euler problems/41 to 50‎ (→Problem 41: It's tiring to see code which has been hacked together after the solution has been found to optimize it. e.g. Why was there the assumption that it was a 7-digit pandigital?)
10:25, 11 June 2011 (hist) (diff) Euler problems/21 to 30‎ (→Problem 29)

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