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transitsleuth.com
| | justsnaps.wordpress.com
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| | 1 post published by nuvofelt on July 27, 2012
| | robertmammone.wordpress.com
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| | 1 post published by Robert Mammone on September 9, 2019
| | divisbyzero.com
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| | Several years ago a colleague and I made paper copies of this famous old puzzle to distribute to prospective mathematics students. It is a fantastic puzzle, so I thought I'd post it here again. From what I can tell, the puzzle was invented in 1871 by Sam Loyd (1842-1911), probably history's most famous "puzzler." It...
| | thevisualchronicle.com
6.7 parsecs away

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| 1 post published by Joe on October 14, 2024