Try this puzzle for a bit of fun. 1) Key-in the first 3 digits of your phone number into the calculator (not your area code) 2) Multiply this by 80 3) Add 1 4) Multiply by 250 5) Plus the last four digits of your home phone number 6) Plus the last four digits of your home phone number again 7) Minus 250 Divide by 2 Is it your phone number?
And here's a shortened version: 1.) Key in the first 3 digits of your phone number (not the area code). 2.) Multiply by 10000. 3.) Then add the last four digits of your home phone number. Best regards, -Javacool P.S. Waiting to see who posts "Key in your 7-digit phone number." first.