[Grab a calculator - you won’t be able to do this one in your head…] 1. Key in the first three digits of your 7-digit phone number (NOT the area code); 2. Multiply by 80; 3. Add 1; 4. Multiply by 250; 5. Add the last 4 digits of your phone number; 6. Add the last 4 digits of your phone number again; 7. Subtract 250; 8. Divide number by 2. What you have is your phone number… !!! ... ... ... ... ... ... ... ... ... ... ...

Not sure? Prove it with this Phone Math Trick Excel Spreadsheet see also College, Phone & School Sections