speed-grid/addition-5x5/expert · 套题 7
2 problems
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1
4×4 addition speed grid. Row: [1, 7, 2, 10] × Col: [9, 2, 1, 8]
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2
4×4 addition speed grid. Row: [9, 8, 5, 3] × Col: [9, 6, 3, 5]
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