THE DIFFERENCE BETWEEN ANY NUMBER
OF TWO OR MORE DIGITS, AND THE SUM
OF ITS DIGITS, IS ALWAYS A MULTIPLE OF NINE

Now lets play guess the number. Pick any two or more digit
number. Next add the digits of the number together.
Subtract what you get from the original number, and circle
one of the numbers in the difference that is not a nine.

For me to guess the number you circled you must tell me the
numbers that you did not circle. Enter them in the box below
in any order, but with no spaces between them.

Enter the numbers you did not circle,
no spaces please.  

Click on Calculate and I will guess the number you circled

The number you circled was

What? I didn't guess your number? You might want to check your work!

Enter the random number you picked

                 
The sum of your digits should have been:
and the difference should have been: