What is a Math Captcha?
In order to distinguish between humans and robots, Math CAPTCHA is a variation of CAPTCHA spam filtering services. Users are required to solve a simple math problem before they can properly submit their form response using this functionality. Each maths problem is produced at random, and you can adjust the difficulty by selecting the largest number that can be calculated. Users are given a math challenge with Math CAPTCHAs, for instance, and must solve it before they may upload material.