首页
登录
职称英语
数列按照1,2,2,3,3,3,4,4,4,4,5,…的规律一直排下去,which of the following is the 100th number?A
数列按照1,2,2,3,3,3,4,4,4,4,5,…的规律一直排下去,which of the following is the 100th number?A
游客
2024-01-13
47
管理
问题
数列按照1,2,2,3,3,3,4,4,4,4,5,…的规律一直排下去,which of the following is the 100th number?
选项
A、14
B、13
C、15
D、12
E、11
答案
A
解析
S=1+2+3+…n-1+n=n(n+1)/2
当n=13时,S=91,也就是说第91个数是13,第92个数是14,14要出现14次,第100个数当然是14,选择A。
转载请注明原文地址:https://www.tihaiku.com/zcyy/3360004.html
相关试题推荐
Mancannotgoonincreasinghisnumberatthepresentrate.Inthenext30y
Mancannotgoonincreasinghisnumberatthepresentrate.Inthenext30y
Mancannotgoonincreasinghisnumberatthepresentrate.Inthenext30y
Mancannotgoonincreasinghisnumberatthepresentrate.Inthenext30y
Mancannotgoonincreasinghisnumberatthepresentrate.Inthenext30y
Mancannotgoonincreasinghisnumberatthepresentrate.Inthenext30y
Thegovernmentplaced______onthenumbersofforeigncarsthatcouldbeimported
Therewerea______numberofstudentsontheplayground.A、fewB、littleC、shortD、
Normallyastudentmustattendanumberofcoursesinordertograduate,and
Normallyastudentmustattendanumberofcoursesinordertograduate,and
随机试题
Peoplethinkingabouttheoriginoflanguageforthefirsttimeusuallyarri
Forthemostpart,thethousandsoflanguagesintheworldtodayfallinto
Iaskedsuccessfulpeoplewhatthesecretoftheirsuccesswas.I【B1】______a
Jim’sHardwarestorenormallysellsbulknailsat$1.09apound.Thereisasale
Thepriceofoilintheworldmarkethas(great)______increasedinrecentmont
A.乳腺内有多发胀痛、质韧之肿块 B.乳房红肿胀痛,内有触痛伴波动感的肿块
在水路运输中,水路旅客班轮运输业务经营者应当在开航的15日前通过媒体并在该航线停
患者,女,56岁,上消化道出血后出现意识错乱,对时间、地点、人物的概念混乱,不能
在班级管理中,处于主体地位是() A.教师B.学生C.校长D.教导主任
对某公司生产的产品进行检查,假设某一祷件上的缺陷数X服从泊松分布,每个铸件上的平
最新回复
(
0
)