Whats nine plus ten?
Do you know what it is?
Hint-Its not 19
Ha.
Its 21
Heh.
Its mathematically proven.
9+10 has 2 numbers, and if you add two to the real total, it's 21.
So 4+6 really equals 12.
Called the Zachy's law.
If the 2 numbers in an addition problem go least to greatest, then you add the number of digits.
Read on to find the origin of Zachy's law.
