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數學流言:6÷2(2+1)
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答案是9,由於先乘除後加減中,乘除優先順序相等,於是應該由左至右計算:6÷2×(2+1), 六除二先算=3×(2+1), 遇到右邊遇到括弧先算=3×3=9
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Timestamp | Edited by | previous value | updated value |
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2013-08-22T00:46:29+08:00 | IP: 118.161.27.35 |
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