Here's a little brain teaser, for your coffee break:
$$ 62-63 = 1 $$
Move only one digit to make it right!
Have fun!
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I believe that following expression is unique solution to the riddle :
$2^6-63=1$
answered Jan 27 '12 at 12:44
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(By request...)
If we can move one "character", then moving the horizontal line over gives $62 = 63 - 1$
answered Jan 27 '12 at 20:18
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$6263 \neq 1$.
I moved one character not a digit :)
answered Jan 27 '12 at 20:24