[中學] 硬幣付款問題(題目是不是有錯)
題目：http://ppt.cc/E54N
我要問的是：我寫的算式+中文註解 觀念有正確嗎?
再來就是第二小題，答案是不是要跟第一小題一樣，然後算式也應該要一樣的呢?
我懷疑他第二小題答案是錯的><
求助了！ 謝謝好心人幫我><
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