Top network posts
- 23When is a sum of consecutive squares equal to a square?
- 13Integer Sequence "sums of digits of squares".
- 12Two parallel lines and distance between three points on them.
- 12How many such positions are there? (chess/math checkmate puzzle)
- 11Unique matrix of zeros and ones
- 10proving that $OI=DE$, and proving that $OI\perp DE$
- 8Unique matrix of zeros and ones
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