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“think of any single number greater than zero”
Think of any single number greater than zero; such as, 1 to 9.
Multiply the number of your choice by 3. Add 1. Multiply by 3. Add the original number to the result.
The answer will always end with 3. Delete the 3, and the remaining figure will be the original number that you started with.
This entry is located in the following unit:
Number Challenges
(page 1)