A lateral thinkg puzzle : The coconut Millionaire

来源: 于 2009-01-12 19:23:25 [博客] [旧帖] [给我悄悄话] 本文已被阅读：次

A man buys coconuts at $5 a dozen and sells them at $3 a dozen. As a result of this he becomes a millionaire. How come?