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.
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. |
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