OG 329

[nature]

In the table above,what is the least number of table entries that are needed to show the mileage between each city and each of the other five cities?
對不起喔...不會畫圖...大致講解一下
是6*6的方格圖,左邊和上面的方格邊都依ABCDEF順序排列,上到下,左到右

看不太懂這題目的意思
看了解答..還是不懂怎麼算
請問一下大家....

[bear]

就是在問 這六各城市彼此間有幾條路阿 ~~~

他連圖都幫已話好了 ....這更棒....就用數數法囉~~~
怎麼數阿~~
先從1-1格, 2-2格, 3-3格一直下去, 劃條從左上到右下的線....
這樣部是把圖明顯化成兩半嗎~~~
再來你只要算其中一半有幾各格子...就是答案了....

試試看吧~~~~

[chris8888]

很簡單, 6*6的格子要算出what is the least number of table entries
=> 6*6/2-6 = 12