Here is a math trick so unbelievable that it will stump you.


 


1. Grab a calculator. (You won't be able to do this one in your head)

2. Key in the first six digits of your mobile number

3. Multiply by 80

4. Add 1

5. Multiply by 250

6. Add the last 4 digits of your phone number

7. Add the last 4 digits of your phone number again.

8. Subtract 250

9. Divide number by 2

Do you recognize the answer...?