Thanks. I got total 12 cases. This time, we followed the order.
Thanks.O-钝,R-直,A-锐。第二问我得到七种。第三问12种我还没来得及想呢!能够证明这是完全无遗漏的吗?
Yes, if we recognize the graph in mirror is the same as the gra
“1) OOOA OOAO”应属于一种安排吧?把它们排列成圈,看不出区别了。这样就是11种了。
Thankd, you are right..
jinjing
2010-10-17 14:24:19Thanks. I got total 12 cases. This time, we followed the order.