Friday, October 7, 2011

MY FAVORITE CAPTCHAS

I can't seem to find the Omega key on my keyboard.

Oy!

Part Arabic? Part "Ron Silver"?

This Captcha was brought to you by the Biography Channel.

Uh-oh. I think the Captcha folks fell off the wagon again.
To enter this Captcha, simply calculate the
Erdős Conjecture on Arithmetic Progressions. 

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