HARD THINGS TO SOLVE EQUALING 12??

Question

Tell me some of the hardest matatical equations,riddles,questions,mindtricks etc that equal 12. Or just anything hard to solve equaling 12. I wanna see what you guys (and girls) come up with

Answer

1 / (&radic;1 + &radic;2) + 1 / (&radic;2 + &radic;3) + 1 / (&radic;3 + &radic;4) +...+ 1 / (&radic;(n - 1) + &radic;n) = 12

Find n.

It's no fancy maths required. Actually, a ninth grader should be able to solve this. But I like it. Solve it and you'll understand, why... ;)

HARD THINGS TO SOLVE EQUALING 12??

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