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OG11-PS 32
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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