首页
登录
职称英语
The sum of the first 50 positive integers is 1,275. What is the sum of the integ
The sum of the first 50 positive integers is 1,275. What is the sum of the integ
游客
2024-01-12
4
管理
问题
The sum of the first 50 positive integers is 1,275. What is the sum of the integers from 51 to 100, inclusive?
选项
A、2525
B、2550
C、325
D、3775
E、5050
答案
D
解析
前50个正整数的和是1275,问从51至100的整数(包括51和100)的和是多少?
解:本题的正确答案为(D)。为简化计算,考生可把从51到100之间的整数拆开来计算:51=50+1,52=50+2,…100=50+50,由此可得:51+52+…100=50×50+(1+2+…+50)=3775
转载请注明原文地址:https://www.tihaiku.com/zcyy/3356249.html
相关试题推荐
Ifthesumoffiveconsecutiveoddintegersis5,whichofthefollowingcouldb
Whichofthefollowingisequaltox24forallpositivevaluesofx?A、x12+x12B、
Whichofthefollowingcannotbethemedianoffivepositiveintegersa,b,c,d
Ifxisapositivenumberand1/2thesquarerootofxisthecuberootofx,th
Thesquarerootof636isbetweenwhichsetofintegers?A、24and25B、25and26
Ifx,y,andzarepositiveintegersandx2=y2+z2,whichofthefollowingmustb
If[img]2011q3/ct_egmatqm_egmatqchoose_0381_201121[/img]forallintegersxand
Ifx,y,andzarepositiveintegers,and4x=5y=6z,thentheleastpossiblevalu
Whatisthesmallestpossiblecommonmultipleoftwointegerswhicharebothgre
Whatisthegreatestpossiblecommondivisoroftwodifferentpositiveintegers
随机试题
TheUnitedStatesgovernmentwantstoknowwhatthepublicthinksaboutits
Theypreferaquietbeachholidayandwouldliketochooseahotelwithlotsof
水泥稳定材料或水泥粉煤灰稳定材料,层宜2h内完成碾压成型,施工控制时间应取混合料
()是国际通用的衡量劳动者退休前后养老保障水平差异的基本标准,通常以“某年度新退
资产负债表编制的理论依据是“资产=负债+所有者权益”的会计恒等式。(正确)温馨
以下不属于投资者购买基金的间接成本的是( )。A.管理费 B.托管费 C.
女性,20岁,发热两周,继而出现膝关节疼痛,诊断为系统性红斑狼疮(轻型),该患者
273、直埋电缆沿线、水底电缆应装设()标识。 A、临时B、永久C
银行承兑汇票的承兑银行,应当按照票面金额向出票人收取()的手续费。A:千分之一
病理性缩复环最常见于A、高张性宫缩乏力 B、妇女型骨盆 C、软产道损伤 D
最新回复
(
0
)