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標題: 求救, 數學題 [打印本頁]

作者: dsedse 時間: 18-3-4 11:18 標題: 求救, 數學題

In a school, students must study at least one language from german, french and spanish of these students: 7study all three of the languages, 10 study both german and french, 12 study both spanish and german, 9 study both french and spanish, 16 study spanish, 18 study german work out the total number of the students in the class who study, You may use the Venn diagram to help with your calculations.

作者: Hoba15 時間: 18-3-4 14:10

dsedse 發表於 18-3-4 11:18
In a school, students must study at least one language from german, french and spanish of these stud ...

作者: cornelius 時間: 18-3-4 14:59

本帖最後由 cornelius 於 18-3-4 15:01 編輯

dsedse 發表於 18-3-4 11:18
In a school, students must study at least one language from german, french and spanish of these stud ...

22 (see the Venn diagram attached)

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