| S | T | I | F | F |
| + | F | I | R | M |
| F | I | R | S | T |
See more puzzles containing FIRM, FIRST or STIFF.
Would you like to see the solution?
The rules for cryptarithm puzzles are simple. Each letter represents one of the digits 0 to 9. Different letters represent different digits. The first digit in a number can't be 0. Your job is to find out what digit each letter represents. Can you solve the puzzle shown here?