正確: 2X3=6, 5X9=45, 6X9=54, 9X8=72, 9X7=63, 4X8=32, 4X6=24, 7X3=21, 5X6=30, 9X4=36, 8x8=64, 6x7=42, 7x8=56, 2x9=18, 3x9=27, 錯誤: 2X3=8, 5X9=54, 6X9=44, 9X8=22, 9X7=36, 4X8=30, 6X4=28, 7X3=14, 6X5=25, 9X4=28, 8x8=42, 6x7=35, 7x8=49, 2x9=16, 3x9=21,

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