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Question
Complete the following magic square by supplying the missing numbers:
| 18 | 17 | 4 | |
| 14 | 11 | ||
| 9 | 10 | ||
| 19 | 16 |
Solution
In a magic square, the sum of each row is equal to the sum of each column and the sum of each main diagonal. By using this concept, we have:
| 7 | 18 | 17 | 4 |
| 8 | 13 | 14 | 11 |
| 12 | 9 | 10 | 15 |
| 19 | 6 | 5 | 16 |
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