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Discussion about math, puzzles, games and fun. Useful symbols: ÷ × ½ √ ∞ ≠ ≤ ≥ ≈ ⇒ ± ∈ Δ θ ∴ ∑ ∫ π -¹ ² ³ °
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#1 Re: Help Me ! » Physics olympiad question » 2016-03-05 05:38:40
From which Physics Olympiad is this question ? I would really like to know 
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