A total of 40 tourists went on a trip. If 18 of the tourists visited site X, 18

游客2024-01-12 50

问题 A total of 40 tourists went on a trip. If 18 of the tourists visited site X, 18 visited site Y, and 8 visited both site X and site Y, how many visited neither site X nor site Y?

选项 A、4
B、10
C、12
D、22
E、28

答案 C

解析总计40个游客去旅行，若18人参观了景点X，18个人参观了景点Y，8个人既参观了景点X又参观了景点Y，问有多少人既未参观景点X，又未参观景点Y?
解：本题的正确答案为(C)。显然可用图形来直观表示：

因此既未参观景点X，又未参观景点Y的人数为：40-(18+18-8)=12人

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A total of 40 tourists went on a trip. If 18 of the tourists visited site X, 18

Theyoungman______visitedourschoolthismorningisMaria’sbrother.A、whoB、w

Thenoticewaswritteninseverallanguages______foreigntouristsshouldmisunde

Isthisfactory______alotofstudentsvisitedyesterday?A、theoneB、whichC、who

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Atotalof40touristswentonatrip.If18ofthetouristsvisitedsiteX,18

Tamekoalabearshandledbytouristsare______,butwildkoalasarehardtocont

Becauseofthe______effectsofthehotsprings,touristssufferingfromvarious

Tellmeaboutacityyouhavevisited.Youshouldsay:wherethecityisand

Describeavillageyouhavevisited.Youshouldsay:whereitiswhenandhowyo

Describeapark/gardenthatyouvisitedinyourchildhood.Youshouldsay:where

SarahDavislivesinDalton,Australia,andherparentsownasheepfarmthe

InEnglish,thecolorgreenisassociatedwithjealousy,whichissometimes

Maryisinbedwithafeverandshecan’thopeto_________thecoldinafewdays

______(老实说),teachersarealsounderenormouspressure.Totellyouthetruth此处考

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关于GIS设备抽真空处理，下列说法错误的是(____)。（A）采用出口带有电磁阀

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