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The Power of No. 9

Mar 6, 2013

Pick a number.
Multiply it by nine.
Add all the digits together.
If you have more than a one digit number left, keep adding them together until you have only one digit left.
Your answer is 9.



Example:

My number:318
Multiplied by nine:9 * 318 = 2,862
Add digits together:2+8+6+2 = 18
Add digits together:1+8 = 9
My answer is nine.