3人分金沙。為何不公平。（2.5星）

I did not mean this is a bad answer. this is what i got at the first place (i guess i am not alone) - then I soon notice it is not correct.

Then can you figure out why?

A 分成三堆，讓另二人挑兩堆，A得剩下一堆。
然後 B C 二人把金沙合起來，重新讓其中一人（B)分成兩堆,由第三人(C)先挑。