Square Root of Any Number in 3 seconds - Crazy Math Trick

Transcript

What if I ask you to quickly tell me in 5 seconds what will be the value of square roo of 81 without using a calculator? You will laugh at me and say it doesn't require a calculator or even 5 seconds. I can answer it in 1 second. The answer is 9. But now what if I ask you to find the square root of 87 without using a calculator and within 5 seconds... Read More