# Kaprekar's Process for 2-Digit Numbers/Mistake

## Source Work

The Dictionary
$63$
The Dictionary
$63$

## Mistake

Kaprekar's process for $2$-digit numbers leads to the cycle $63 - 27 - 45 - 9 - 81 \ldots$

The statement needs to specify that the $2$-digit numbers do not include repdigit numbers, as for example:

$\map K {11} = 11 - 11 = 0$

trivially.