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美国数学竞赛AMC题目及答案.docx


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2013AMC8Problems/Problem1ProblemD-ani匚刁wantstoarrangeherme?d已I匚arsinrowsv-.:ith 6匚arsm轻日ghroShenowhas23mcdelcars・isthesmallestnumberofadditionalcarsshemustbuyinordertobeabletoarrangeallhercarsth怜way?⑷1 (B)2 (C)3 (D)4 (E),"5Oc/ooff,todayonly:half-poundpackagesforjustS3perpa匚kage."Whatisthregularpriceforafullpoundoffish,indollars?(A)6 (B)9 (C)10 (D)12 (E): ■■1 - 1- 1i1HI?(A)-10 (B)0 (C)1 (D)500 (E),eachofhersevenfriendspaidanextra$?(A)$120 (B)8128 (C)S140 (D)8144 (E)$',6,,theaverage(mean)weightofthesefivechildrenorthemedianweight,andbyhowmanypounds?(E)(A)median、by60 (B)median,by20 (C)average^by5 (D)average,,30=?(A)2 (B)3 (C)4 (D)5 (E)&,?(A)60 (B)SO(C)100 (D)120 (E)?(A)| (B)J(C)|(D)l(E)|,thesecondjumpis2meters,thethirdjumpis4meters,andsoon,thenonwhichjumpwillhefirstbeabletojumpmorethan1kilometer?(A)9th(B)10th(C)11th(D)12th(E)monfactorof180and594?(A)110 (B)16$ (C)330 (D)625 (E)6&0Ted',?(A)1 (B)2 (C)3 (D)4 (E)5Atthe2013WinnebagoCountyFairavendor

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