In the number $85274369$, each odd digit is decreased by $1$ and each even digit is decreased by $2$. After these changes, the digits are rearranged t...
Question
In the number $85274369$, each odd digit is decreased by $1$ and each even digit is decreased by $2$. After these changes, the digits are rearranged to form a new number. What is the sum of the digits that appear only once in this new number?