If you think you can, [b]make sure to put it into the spoilers tags.
Also, try to be honest, do it yourself, don't look it up.[/b]
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Prove that the square root of 3 is an irrational number.
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Post your own, if you have any logical puzzles worth sharing.
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When I think of the square root of three, I think of the Unit circle and the tan of pi/3 being the square root 3. Hm... Without using wolframalpha: sin(sin^-1(2x+pi/3)) = pi/3