一道GMAT数学题(OG上的)应该不难的 可不知卡在哪儿了.John has 10 pairs of matched socks.If he loses 7 individual socks,what is the greatest number of pairs of matched socks he can have left?A.7 B.6 C.5 D.4 E.3 为什么不是A呢?
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![一道GMAT数学题(OG上的)应该不难的 可不知卡在哪儿了.John has 10 pairs of matched socks.If he loses 7 individual socks,what is the greatest number of pairs of matched socks he can have left?A.7 B.6 C.5 D.4 E.3 为什么不是A呢?](/uploads/image/z/10916459-35-9.jpg?t=%E4%B8%80%E9%81%93GMAT%E6%95%B0%E5%AD%A6%E9%A2%98%28OG%E4%B8%8A%E7%9A%84%EF%BC%89%E5%BA%94%E8%AF%A5%E4%B8%8D%E9%9A%BE%E7%9A%84+%E5%8F%AF%E4%B8%8D%E7%9F%A5%E5%8D%A1%E5%9C%A8%E5%93%AA%E5%84%BF%E4%BA%86.John+has+10+pairs+of+matched+socks.If+he+loses+7+individual+socks%2Cwhat+is+the+greatest+number+of+pairs+of+matched+socks+he+can+have+left%3FA.7+B.6+C.5+D.4+E.3+%E4%B8%BA%E4%BB%80%E4%B9%88%E4%B8%8D%E6%98%AFA%E5%91%A2%3F)
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