speed-grid/addition-5x5/easy · 套题 8
2 problems
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1
4×4 addition speed grid. Row: [8, 2, 5, 1] × Col: [4, 8, 1, 6]
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2
4×4 addition speed grid. Row: [7, 2, 5, 8] × Col: [7, 9, 3, 1]
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