这个世界上真有透视眼吗?在右图中有5颗骰子上下叠在一起,有几个面被隐藏?你能不能一眼就看出,这些面上的点子数和是多少?你可能会说,一颗骰子六个面,面上的数字和是1+2+3+4+5+6=21,现在有5颗骰子,点子总数是105,眼睛能看到的有21个面,减去这些面上所有的点数,就是隐蔽着的点子总和。是的,这样的方法当然算得出来,但如果有更多的骰子叠在一起呢,比如10颗骰子,可以看到41个面,按上 Is there really a fluoroscopy in this world? There are 5 dice stacked on top and bottom in the right figure, and how many faces are hidden? Can you see at a glance what the sum of the numbers are on these faces? You might say , A dice six faces, the number on the face is 1 + 2 + 3 + 4 + 5 + 6 = 21, there are 5 dice, the total number of pips is 105, the eyes can see there are 21 faces, minus Go to all these points on the surface, is the sum of concealed ideas. Yes, that’s a sure bet, but if you have more dice stacked together, like 10 dice, you can see 41 faces, press