Puzzleup 2013 (6) Regions - 拼圖

Olivia · 2013-08-28

Table of Contents

Post
Comments
Related Posts

題目網址: http://www.puzzleup.com/2013/
http://www.puzzleup.com/2013/puzzle/?247
答題時限: ８月２９日７ＰＭ－比賽結束（約12月11日）
加分時限: ８月２９日７ＰＭ－９月２日６：５９ＰＭ

答對可得基本分１００分。答案可上傳５次，每改１次答案從基本分扣２０分。　
比賽期間內可隨時上傳答案，加分時限內答對第ｎ天加（６－ｎ）分　　　　　
另依題目的難易有額外加分（如有８０％的人這題答錯，答對者加８０分）　　

◆Regions

What is the maximum number of regions into which four circles and four
straight lines can divide a plane?

If the problem was asked for two circles and two straight lines, then the
answer would be 14.

四個圓形和四條直線最多可以把一個平面畫成幾個區域？

如果問題改成兩個圓形兩條直線的話，答案是１４

http://www.puzzleup.com/2013/img/puzzle/2013/06_ek1.jpg