6除2（1+2）=1 还是 9

陈星星

回复 12# 38.5中

请检查论坛一下。。。嘻嘻

陈星星

回复 10# kristinax

请检查论坛一下。。。嘻嘻

陈星星

回复 1# chee_yong88

请检查论坛一下。。。嘻嘻

chee_yong88

回复 23# 陈星星

请问这是什么意思？

At the level of Mathematics I work there is no one set of rules
- mathematics is about picking a set of rules and seeing what you
can do with those rules.