Impossible CAPTCHAs

I hate CAPTCHAs even though I use them on my site.  I understand why we need them.  My spam stopped once I installed it.

When I come across some that are impossible or interesting, I take a screen shot of them.  (On a Mac: CMD-Shift-4 and drag the mouse over the area you want to capture.)

Here are some of my favorites:

This one contains “not equal”, double arrow arrow, “element of” and so on:

Does anyone know how to type the first character?

More math:

The newest ones I have seen contain color photos that usually contain digits.

Is this a prediction that I will be rich?




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