Question

write a short note on captcha code​

Answer 1

Answer:

CAPTCHA stands for Completely Automated Public Turing test to tell Computers and Humans Apart. In other words, CAPTCHA determines whether the user is real or a spam robot. CAPTCHAs stretch or manipulate letters and numbers, and rely on human ability to determine which symbols they are.

Answer 2

Answer:

$5512222 =x10 |?| \times \frac{?}{6 - 2 \times \div 02202 {12 \\ |1x)445 - (y.2yy5 \times \\ | }^{2} } {5}^{ \: } \times \frac{?}{?} \times \frac{?}{?}$