[計量] 問韓國機經數學
In a party of 66 members in a hotel, 40 members like dancing,
23 members like swimming and 6 members like either dancing or
swimming or both. Find the number of people who likes only dancing?
抱歉沒有正解,請問有人能解答嗎? 感謝
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03/27 01:43, , 3F
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03/27 03:39, , 5F
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