首页
登录
职称英语
{1, -3, 4, 1, -3, 4, 1, -3, 4, …}In the sequence above, the first 3 terms repea
{1, -3, 4, 1, -3, 4, 1, -3, 4, …}In the sequence above, the first 3 terms repea
游客
2024-01-12
35
管理
问题
{1, -3, 4, 1, -3, 4, 1, -3, 4, …}
In the sequence above, the first 3 terms repeat without end. What is the sum of the terms of the sequence from the 150th term to the 154th term?
选项
答案
7
解析
由题目可知,这个数列是由1、-3、4三个数字循环组成的数列,若探究之后的某一项是这三个数字中的哪个,则需要用项数除以3,看余数所对应的为哪一项。如看第5项是几,则用5/3=1……2,则说明是三个数中的第2项,是-3,那么第5项也是-3。所以,第150项:150/3=50……0,故第150项为4。按上述规律写出150~154项后可知,上述五项分别为4,1,-3,4,1,求和得7。
转载请注明原文地址:https://www.tihaiku.com/zcyy/3355233.html
相关试题推荐
Asequenceissymmetricallydistributedarounditsarithmeticmeanm,andthenu
Ifeachtermofthesequence(a1,a2…,an)iseither7or77,andthesumofthe
Acommondisabilityintestpilotsishearingimpairment,aconsequenceofsitti
a1,a2,a3,...,an,...Inthesequenceabove,eachtermafterthefirsttermiseq
Inacertainsequenceofnumbers,eachtermafterthefirsttermisfoundbymul
ThesequenceofnumbersC1,C2,C3,…Cn…isdefinedbyC1=1,C2=1,andCn=
{1,-3,4,1,-3,4,1,-3,4,…}Inthesequenceabove,thefirst3termsrepea
Datafrominter-speciesgenomicsequencecomparisonsandgenome-wideexpression
AsthepoliticalconsequencesofNazismandtheliberaltoneofthep
DILETTANTE:COMMITMENT::A、nonentity:consequenceB、gourmand:self-restraintC、min
随机试题
•Readthearticlebelowabouttheimpendingflu.•Choosethebestwordtofill
Intheolddays,whenschoolswantedtocommunicatewithparents,theysent
TheBestRetailersCombineBricksandClicksA)Retailprof
Anindustrialsociety,especiallyoneascentralisedandconcentratedastha
MyViewOnDrivingRestrictionsinBigCities1.大城市的交通拥挤问题越来越凸显2.有人提出通过车辆限行缓解交通
A.heightB.compensateC.whereasD.imbibeE.reflectF.
变更商标注册人名称或者地址的,商标注册人应当将其全部注册商标一并变更。()
人脑对直接作用于感觉器官的客观事物的整体属性的反映是( )A.感觉 B.知觉
与变形杆菌X株的菌体抗原有共同的多糖类属抗原的微生物是A.立克次体B.螺旋体C.
杰弗德原来只是一名普普通通的小会计,经过不懈努力,最终升任美国电报电话公司的总经
最新回复
(
0
)