谁能告诉我这个游戏是什么原理?反正肯定跟数学有关!很灵的!

10a+b-(a+b)=9a

a=1~9


你会发现,不管那些图怎么变,

9,18,27.......81这些9的倍数都是一样的,

而且显示出来的也是这个~
 
借地方给大家出道物理题:

一个立方体的框架
其中每条边的电阻都是 R
问从一端到其对角一段的电阻是多少

图画的不好,答案稍后公布
 
o yeah, i got it. first, you have a 2-digit number, which can be represented as 10a+b, then u substract the sum of a+b, which is 10a+b-(a+b), you got 9a. since a is a integer, 9a can be divided by 9 completely. so all the numbers that can be divided by 9 have the same diagram.
that's why!!!
 
那道物理题,你需要先白立方体压缩。 然后得到一个等效电路,是5条路并联,2条路串联,然后再根据串并联电阻之特点,进行求解。 呵呵,初2的题,我都忘得差不多了。
 
i am not sure, is that 5R/7
 
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