用英语回答,拜托孒,各位!!

Why not put the first one under the desk ? Since the second coin is on the desk ,if you put the first one under the desk , it's also under the second one .

I don't think ginyes has worked it out . You simply can not stand on your head all the time .What if you stand on the floor again?

put the first one on the second one,and stand on your head.
仅供参考

put the first one under the table.

是不是更好？