Math Is Fun Forum
Discussion about math, puzzles, games and fun. Useful symbols: ÷ × ½ √ ∞ ≠ ≤ ≥ ≈ ⇒ ± ∈ Δ θ ∴ ∑ ∫ π -¹ ² ³ °
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The hardest logic puzzle ever becomes even tougher
by NNikolay
Puzzles and Games
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2012-06-20 00:09:50
by wintersolstice
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