This is one of the OLD POTM problems
Long version of the problem.
Back to the list of problems.
Short Problem Description
deadline: september, 1994
The story this summer is those old style letter substitution puzzles like:
S E N D
+ M O R E
=========
M O N E Y
The task is to figure out what digit each of the letters stands for.
In the above example, if the letter "O" stands for zero, the letter
"M" stands for one, "Y" for two, "E" for 5, "N" for 6, "D" for 7,
"R" for 8, and "S" for 9 - then the substitutions make a valid
addition problem with a correct answer. A solution is given by:
SEND 9567 letter = S E N D M O R Y
+MORE +1085 digit = 9 5 6 7 1 0 8 2
===== =====
MONEY 10652