32 John has 10 pairs of matched socks. If he loses 7 individual socks, what is the greatest numberof pairs of matched socks he can have left? A 7 B 6 C 5 D 4 E 3 答案B 被題目的意思混淆了 想請問 1.是說遺失的七隻襪子中最多使他失去幾雙嗎? 2.像這種最多最少的題目要怎麼解才會快呢
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