Puzzleup 2022 (9) ARTS AND SPORTS GROU - 拼圖

Table of Contents


題目網址: https://www.puzzleup.com/2022/
https://www.puzzleup.com/2022/puzzle/?9
答題時限: 12月15日7PM-比賽結束(約12月29日)
加分時限: 12月15日7PM-12月20日6:59PM

答對可得基本分100分。答案可上傳次,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)  

◆ARTS AND SPORTS GROUPS

Arts and sports groups will be formed in a class of 12 students.

-Each group consists of 3 students.

-Each student will take part in at least one art and at least one sports
group.

-For any pair of students, the number of arts groups and sports groups
that both students are members are the same.

-No three students can be in the same arts group and sports group.

What is the total number of arts and sports groups created to meet these
conditions?

班上12位學生將組成若干個美術小組與體育小組。

-每個小組包含3位學生。

-每個學生都要加入至少一個美術小組以及至少一個體育小組。

-對任意兩位學生而言,他們共通的美術小組數量跟共通的體育小組數量要相等。

-同樣的三位學生,不得出現在一樣的美術小組與體育小組。

問滿足上述條件,所組成的美術小組與體育小組的數量總和?

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All Comments

Mary avatarMary2022-12-18
啊..題目又改了 上傳完答案才發現 囧