The most obnoxious and frustrating captchas are the ones that make you count the dice and to choose the image with the dice that adds up to a specific number. You're given three images, but if you take too long solving, it gives you 10. I spent nearly 30 minutes trying to log into my Airbnb account. After having to deal with this, I said screw and closed my Airbnb account entirely (for this experience, as well as other reasons). I understand Airbnb is using a 3rd party CAPTCHA system, but trying to solve a math problem seems like something for a computer, not a human.