The sum of the non-prime numbers between 40 and 50, non-inclusive, isA、131B、176

游客2025-02-27 40

问题 The sum of the non-prime numbers between 40 and 50, non-inclusive, is

选项 A、131
B、176
C、274
D、405
E、495

答案 C

解析 The non-prime numbers between 40 and 50 are 42, 44, 45, 46, 48, and 49. (Remember, the non-inclusive means we don’t include the 40 and 50.) Add them all up and we get 274.

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The sum of the non-prime numbers between 40 and 50, non-inclusive, isA、131B、176

Thesumofthenon-primenumbersbetween40and50,non-inclusive,isA、131B、176

Ifx,y,andwarenonzeronumbersandx-y=w,whichofthefollowingisequalto

If[img]2011q3/ct_egmatqm_egmatqchoose_0454_201121[/img]forallnumbersq,r,s

Thetableaboveshowstheone-waydrivingdistance,inmiles,betweenfourcitie

Foranynumberswandz,w·z=w3z(8-w2).Ifbothzandw·zarepositivenumbers,

ListA,BandCmeansthelistofmultiplesofprimenumbers2,3,and5respect

Sixdifferentnumbersaretobeselectedfromthe(0,1,2,3,4,5,6)tocompos

Eachof5positivewholenumbersisatleast8.Theaverage(arithmeticmean)oft

Howmany3-digitnumbersbetween100and200haveadigitthatistheaverageof

Nisbetween1and99,inclusive.What’sthepossibilityofN(N+1)beingthemu

InLondonsomegenerationsagopeopledidn’tgotothecinema,theywentto

Itishardtoimaginealargecitywithoutpolicemen,butsuchwasthe______in

Notuntilthedaybeforeyesterday_____togiveaspeechatthemeeting.A、heagre

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A.急性肺水肿 B.心房颤动 C.感染性心内膜炎 D.右心衰竭 E.血栓

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