Math Is Fun Forum
Discussion about math, puzzles, games and fun. Useful symbols: ÷ × ½ √ ∞ ≠ ≤ ≥ ≈ ⇒ ± ∈ Δ θ ∴ ∑ ∫ π -¹ ² ³ °
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3 card puzzle - http://www.mathsisfun.com/puzzles/three-cards.html
by zander
Puzzles and Games
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2008-09-11 01:05:20
by zander
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