首页
登录
职称英语
At the end of a banquet 10 people shake hands with each other. How many handshak
At the end of a banquet 10 people shake hands with each other. How many handshak
游客
2023-10-15
55
管理
问题
At the end of a banquet 10 people shake hands with each other. How many handshakes will there be in total?
选项
答案
45
解析
试想这十个人排成一排,那么站在最左边的人依次与右边九个握手,而左边数第二个至于其右边八个人握手即可,依次类推,得出算式:9+8+7+…+2+1=45。
转载请注明原文地址:http://tihaiku.com/zcyy/3099393.html
相关试题推荐
Beinganintrovertisabadthing,right?Well,alotofpeopleseemtothin
Beinganintrovertisabadthing,right?Well,alotofpeopleseemtothin
Beinganintrovertisabadthing,right?Well,alotofpeopleseemtothin
Amongthelastgroupsofpeopletoacceptthenewmodelwerereligiousgroups,w
Thereisadiscussionabouthowmuchfreedomparentsshouldallowyoungpeoplet
连年的战争不仅使人们丧失了对生活的热情,还让他们失去了对未来的希望。(deprive)Peoplearedeprivedofbothpassionf
Indevelopingcountries,peopleare______intoovercrowdedcitiesingreatnumber
Thearmywasseeminglyvictorious,butsincemanypeoplelosttheirlives,itwa
Peopletypicallyfindunemploymentapainfulexperience.Itmayresultfrom
Peopletypicallyfindunemploymentapainfulexperience.Itmayresultfrom
随机试题
[img]2012q1/ct_etoefm_etoefwritea_1829_20121[/img]Integrated
WhatistrueabouttheEnglishcharacter?[br][originaltext]F:Johnny,what’s
(1)Earlyinthefilm"ABeautifulMind",themathematicianJohnNashisseen
Nodirectrelationshiphasbeenprovenbetweenhighcholesterollevelsandheart
Text4TheEU'sfalteringprogresstowar
阻塞性黄疸时______________检查为阳性。
A~B(从A到B表示的极限值范围为()。A、A≤X≤B B、A<X≤B C
男性,51岁。乙肝病史19年,大量饮酒史30年,1年来出现乏力,腹胀,尿量减少,
运维班交接班的主要内容不包括:()。(A)所辖变电站运行方式(B)缺陷、
需要主动转运吸收,生物利用度可能会降低的药物有A.维生素B B.半乳糖 C.
最新回复
(
0
)