15 Mar 2006

Math Puzzle


Key in the first three digits of your seven-digit phone number into the calculator. (Note: Do not key in the area code, but the three digits after.)

  1. Multiply by 80.
  2. Add 1.
  3. Multiply by 250.
  4. Add the last 4 digits of your phone number.
  5. Add the last 4 digits of your phone nmber again.
  6. Subtract 250.
  7. Divide by 2.


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