Milyen összeadást jelent a következő táblázat:
${\displaystyle \begin{array}{ccccc}\hfill {\displaystyle }\hfill & \hfill {\displaystyle \text{A}}\hfill & \hfill {\displaystyle \text{B}}\hfill & \hfill {\displaystyle \text{C}}\hfill & \hfill {\displaystyle \text{D}}\hfill \\ \hfill {\displaystyle \text{ +}}\hfill & \hfill {\displaystyle \text{E}}\hfill & \hfill {\displaystyle \text{F}}\hfill & \hfill {\displaystyle \text{G}}\hfill & \hfill {\displaystyle \text{H}}\hfill \\ \hfill {\displaystyle \text{<br>E}}\hfill & \hfill {\displaystyle \text{F}}\hfill & \hfill {\displaystyle \text{C}}\hfill & \hfill {\displaystyle \text{B}}\hfill & \hfill {\displaystyle \text{H }}\hfill \end{array}}$

ha minden betű más számjegyet jelent?