首页
登录
职称英语
The integers between 1 and 100, inclusive, are put in list A if they are divisib
The integers between 1 and 100, inclusive, are put in list A if they are divisib
游客
2025-02-24
11
管理
问题
The integers between 1 and 100, inclusive, are put in list A if they are divisible by 2 and in list B if they are divisible by 3. How many integers in list A are not in list B?
选项
A、11
B、16
C、25
D、33
E、34
答案
E
解析
在1至100,且包括1和100的整数中,若能被2整除(divisible),就被放入A列中,若能被3整除就被放入B列中,有多少数在A列中而不在B列中?
解:本题的正确答案是(E)。1至100中能被2整除的数显然是50个,那么如何算能够被3整除的数呢?在小于或等于100的正整数中能被3整除的最大的数是3的多少倍,就有多少个数能被3整除。在1至100中能被3整除的最大的数是99,所以这100个数中能被3整除的数共有33个。在A列中而不在B列中的数等于在A列中的数减去即在A列中以在B列中数。A和B的交集为能够被6整除的数。1至100中被6整除的数的个数为:100/6=16余4,即16个。所以在A中,而不在B中的数为50-16=34
转载请注明原文地址:https://www.tihaiku.com/zcyy/3971422.html
相关试题推荐
A,B,andCarepointsonaline.ThedistancebetweenAandBistwicethedist
Oneintegerwillberandomlyselectedfromtheintegers11to60,inclusive.Wha
Howmanyofthepositiveintegerslessthan25are2lessthananintegermultip
Ofthepositiveintegersthataremultiplesof30andarelessthanorequalto
m,p,andxarepositiveintegersandmp=xColumnAColumnBm
Onanumberline,thedistancebetweenthetwopointswithcoordinates-5and1
[img]ct_2image018[/img]n,r,s,andtarepositiveintegers.ColumnA
xisthesumofthefirst25positiveevenintegers,yisthesumofthefirst2
ColumnAColumnBTheproductoftwointegersis6
Ifaandbareintegersanda-b=6,thena+bCANNOTbeA、0B、lessthan6C、gr
随机试题
Withoutdoubt,theinternationalrelationsappearattimesbewildering.Stude
PASSAGETWO[br]Howcanmorefishtolerateextremelycoldwater?Bytransplantin
Howmanystudentsmayliveinoneroom?Atmost______[br]Whatoneshoulddoi
[originaltext]Afableisashortstorywhichisnottrue.Itisastorytha
Fansstillrememberthesuperstartheyknewduringherconcert______throughGu
Asamanager,youshouldsetagoodexampletoyourcompanymembers.[br]Apess
青霉素抗革兰阳性(G)菌作用的机制是A.抑制细菌细胞壁肽聚糖(黏肽)的合成 B
男性,26岁,因劳累后呼吸困难伴头晕两个月来诊。查体:脉搏76次/分,节律规整。
与子宫颈癌发生有关的病毒是A.反转录病毒B.EB病毒C.人类免疫缺陷性病毒D.人
经中国证监会、财政部批准,期货交易所、期货公司可以暂停缴纳保障基金的情形有( )
最新回复
(
0
)