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Multiplication Magic
Thanks Math Champ

Write numbers 1 2 3 4 5 6 7 9 on a piece of paper.
Ask a participant to indicate which of these numbers is their favorite number.
Once they have answered, tell them to multiply 1 2 3 4 5 6 7 9 by a number you have chosen.
Their answer will be a long row of their favorite number.

Secret Revealed:
Once the participant tells you their favorite number, multiply it by 9.
The participant chooses 6 as their favorite number.
6 x 9 = 54
Ask them to multiply 1 2 3 4 5 6 7 9 by 54
12345679 x 54 = 66666666
Question: Why?

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