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CAPTCHA + Calculation (As Opposed to One or the Other)
- RiderOfGiraffes 16y agoInteresting, but I add this data point ... On a site I manage I ask people to enter 4 plus nine (in digits). Recently I've had the following answers: thiteen, 13, tirteen, thirten, thurteen, and 11. Yes. 11. The question is, if someone can't add 4 and 9 do you want their opinion?