题目

一道英语的智力测试,
Grandpa:You give me three empty bottles,and I'll give you a bottle of orange.
Dad:Give you twenty-one bottles of orange,Tom.
Tom:I drink all these bottles of orange,and give the bottles to Grandpa.Then he gives me some bottles of orange.How many bottles of orange do I drink in all(一共）?

提问时间：2020-07-18

答案

TOM的爸爸给他21个瓶橙汁全喝掉,21个瓶子可以给他祖父换7瓶橙汁,再喝……掉,再给他祖父6个瓶子,换2瓶橙汁,
接着喝啦!现在自己有3个瓶子,再给他祖父,换1瓶喝………………所以一共喝了31瓶（想撑死谁啊?）
对吗?