US 2014 Math kangaroo Problems Level 11-12-学生用卷

US2014MathkangarooProblemsLevel11-12-学生用卷学生用卷1、【来源】2014年袋鼠数学竞赛(MathKangaroo)竞赛第1题(US2014MathkangarooProblems,Level11−12,Question#1)Ifyoutakeacertainmumberof1×1×1cubesoutofa5×5×5cube,youendupwithasolidfigureconsistingofcolumnsofthesameheight,whichstandonthesamegroundplate(seefigure).Howmanysmallcubesweretakenout?（）A.56B.60C.64D.68E.802、【来源】2014年袋鼠数学竞赛(MathKangaroo)竞赛第2题(US2014MathkangarooProblems,Level11−12,Question#2)TodayisCarla's,Emilie'sandLilia'sbirthday.Thesumoftheiragesisnow44.Whatwillthesumoftheiragesbethenexttimeitisatwo-digitnumberwithtwoequaldigits?（）A.55B.66C.77D.88E.993、【来源】2014年袋鼠数学竞赛(MathKangaroo)竞赛第3题(US2014MathkangarooProblems,Level11−12,Question#3)