A lateral thinkg puzzle : The coconut Millionaire

來源: 於 2009-01-12 19:23:25 [博客] [舊帖] [給我悄悄話] 本文已被閱讀：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?