1991 AJHSME Problems/Problem 20
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Problem
In the addition problem, each digit has been replaced by a letter. If different letters represent different digits then 
Solution
From this we have
Clearly, 
. Since 
,
Thus, 
and 
. From here it becomes clear that 
and 
.
See Also
| 1991 AJHSME (Problems • Resources) | ||
| Preceded by Problem 19 | Followed by Problem 21 | |
| 1 • 2 • 3 • 4 • 5 • 6 • 7 • 8 • 9 • 10 • 11 • 12 • 13 • 14 • 15 • 16 • 17 • 18 • 19 • 20 • 21 • 22 • 23 • 24 • 25 | ||
