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Starting with the 6 in the bottom left corner, what is the highest total you can make, if you only move up or right, using the mathematical signs on the way?
| + | 4 | − | 1 | + | 3 |
| 2 | + | 4 | − | 1 | + |
| − | 3 | + | 2 | − | 2 |
| 2 | − | 4 | + | 3 | − |
| + | 3 | − | 1 | + | 2 |
| 6 | + | 1 | − | 2 | + |
Note: this puzzle is not interactive, and the numbers cannot be clicked.
Puzzle Copyright © Kevin Stone
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Workings