Hint
The question is written in English, but not in its usual order.
Answer
32.
Reading one letter from the top row and then one from the bottom row, the puzzle reads: 'How many letters does this puzzle have'.
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Puzzle 7
Each empty white square in the grid contains one of the numbers 1, 2, 3, …, 8. Each of the horizontal and vertical equations must be true, and each number must be used exactly once.
