[計量] 請教一題印度機經
Given total number of students as 120 &
Number of students learning Spanish = 40
Number of students learning French = 60
Number of students learning Russian = 80
Number of students learning 2 languages = 50
Number of students learning all 3 languages = 10
Find number of students learning none of these languages?
請問一下大家這題要怎麼解呢?
我對這種題目超沒概念
非常謝謝!!
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推
07/22 00:18, , 1F
07/22 00:18, 1F
→
07/22 00:24, , 2F
07/22 00:24, 2F
推
07/22 08:21, , 3F
07/22 08:21, 3F
推
07/22 08:23, , 4F
07/22 08:23, 4F
→
07/22 08:24, , 5F
07/22 08:24, 5F
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