Tuesday, April 22, 2008

Fun with Number Theory: Guessing Your Age

  1. Take the last digit of your age, multiply it by 2, then for every decade you've lived add 1 to it. Color this result Blue in your mind
  2. Think of your favorite digit, any digit at all, multiply it by 11.
  3. Add the last digit of your age to the previous result.
  4. For every decade you've lived subtract 1 from the previous result. This is your Red number.
Alright, now tell me your Blue and Red numbers and I will guess your age!
Blue Number:
Red Number:

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