内空

内空

xie xie!

Thank you!! few questions~

11.

一堆东西里面有p和s,问p和s各多少

1）  取走一个p, p占总数 2/5

2）  取走两个p, p占总数1/4

我选C

Why is this C? a typo? will the 2.) be S? If its about S, what's the reason?

Thanks!!