中間數是225,225-4x=1,所以x=56, 225+4*56=449
449
本帖於 2025-11-19 19:09:16 時間, 由普通用戶 雙喜臨門2024 編輯
中間數是225,225-4x=1,所以x=56, 225+4*56=449
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