趣味逻辑推理题集锦[]（a collection of interesting logic reasoning questions []）

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1、趣味逻辑推理题集锦[1]（Acollectionofinterestinglogicreasoningquestions[1]）InterestinglogicreasoningIsyourheadstucktosomeproblems?Behappy！Itprovesthatyouhavebrains.BulbLogic-puzzles-1.gifImagineyourselfinaroomwiththreeelectricswitches.Intheroomnexttoyou,therearethreelightbulbsThelampsontheordi

2、narytable)-they'renotlit.Eachswitchcontrolsatablelamp.Youcan'tseeitfromaroomToanotherroom.Ifyoucanjustentertheroomwiththelightson,howdoyouknowwhichswitchmatchesthelight?Yourtaskistodetermineallthreeswitches(whatbulbsareconnectedtoswitches1,2,and3).Turnonthefirstlightbulbforafewminut

3、es.It'sgoingtogethotter,right?Andyoujustneedit...Turnitoff,turnontheotherlight,Walkintotheroomandfeelwhichlampiswarm(theonethatwasopenedbefore),andtherestcanbeeasilyseparated.TheballintheholeAtabletennisballfellintoadeep,verytighttube-about30centimeterslong,andthepipewasburiedinthec

4、ementfield,only1centimetersOutoftheground,soyoucan'tmoveit.Thepipeisjustalittlewiderthanthetabletennisball,soyoucan'tputyourhandin.Howcanyoutakeitoutingoodcondition?Youjustneedtopoursomewaterintothetube,andthetabletenniswillfloatup.ThemanintheelevatorThere'samanlivingonthetenfloor.E

5、verydayhewouldtaketheelevatordowntothelobbyandleave.Intheevening,hewouldtaketheelevatorupstairsifanyoneelsecouldIntheelevator-oritrainedthatday,hewouldsitdirectlyonhisfloor.Otherwise,hewouldsitontheseventhfloor,andthenhewouldwalkthreefloorsTohisapartment.Canyouexplainwhy?Thisisproba

6、blythemostfamouslogicalinferencefromthesideThismanisadwarf.Hecan'treachthebuttononthetopoftheelevator,buthecanasksomeoneelsetohelphimpress.HecanusehimtooUmbrellapressing.TheBallHowcanyouthrowaballashardaspossible,andthentheballwillcomebackagain,evenifitdoesn'ttouchanything?Therewasn

7、opin,nobodygotitback.CastlesolutionTheballtoss.magnetThisisalogicalreasoningquestionpublishedinScience.You'reinaroomwithtwoironneedlesandnoothermetal.Onlyoneironneedleisamagnet.Howdoyouidentifyit?YoucanhangthebarwitharopetoseewhichonepointstotheNorth(oronlyoneironbar).Anotherwayofgi

8、vingitistopickupani