Magic Square 4×4 Expert — Set 54

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                "question": "Complete the magic square. Each row, column, and diagonal must sum to 42. Grid: [_ _ _ | 18 _ 10 | 13 12 17]",
                "answer": "11 16 15 | 18 14 10 | 13 12 17",
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                "question": "Complete the magic square. Each row, column, and diagonal must sum to 24. Grid: [11 _ 9 | _ _ _ | 7 12 5]",
                "answer": "11 4 9 | 6 8 10 | 7 12 5",
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                "magicConstant": 24
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                "type": "magic-square",
                "subType": "magic-square",
                "difficulty": "expert",
                "question": "Complete the magic square. Each row, column, and diagonal must sum to 15. Grid: [8 1 6 | _ _ _ | 4 _ 2]",
                "answer": "8 1 6 | 3 5 7 | 4 9 2",
                "grid": [
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                    ],
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                "magicConstant": 15
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                "subType": "magic-square",
                "difficulty": "expert",
                "question": "Complete the magic square. Each row, column, and diagonal must sum to 33. Grid: [_ 9 _ | _ _ 15 | 12 13 8]",
                "answer": "14 9 10 | 7 11 15 | 12 13 8",
                "grid": [
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                        15
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                        10
                    ],
                    [
                        7,
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                    ],
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                "magicConstant": 33
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