Math Is Fun Forum
Discussion about math, puzzles, games and fun. Useful symbols: ÷ × ½ √ ∞ ≠ ≤ ≥ ≈ ⇒ ± ∈ Δ θ ∴ ∑ ∫ π -¹ ² ³ °
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KettyPhally
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Ïðîñèì ïîìîùè Z186833093567, E323076925104, R949155025118
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2011-05-04