Amazing Math Trick

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This math trick will determine your birthday. Just follow the steps with a calculator and press equal after each step. Go ahead and try the trick without cheating! For a simple, online JavaScript calculator, click on the calculator button.

  1. Add 18 to your birth month
  2. Multiply by 25
  3. Subtract 333
  4. Multiply by 8
  5. Subtract 554
  6. Divide by 2
  7. Add your birth date
  8. Multiply by 5
  9. Add 692
  10. Multiply by 20
  11. Add only the last two digits of your birth year
  12. Subtract 32940 to get your birthday!

The answer's format is: month/day/year. For example, an answer of 123199 means that you were born on December 31, 1999. If the answer is not right, you followed the directions incorrectly or lied about your birthday.

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