首页
登录
职称英语
If x, y and z are positive integers such that x is a factor of y, and x is a mul
If x, y and z are positive integers such that x is a factor of y, and x is a mul
游客
2025-02-23
36
管理
问题
If x, y and z are positive integers such that x is a factor of y, and x is a multiple of z, which of the following is NOT necessarily an integer?
选项
A、(x+z)/z
B、(y+z)/x
C、(x+y)/z
D、xy/z
E、yz/x
答案
B
解析
问选项中的分式是不是一个整数,和上面的例题一样只要看分子是否能够整除分母。题目中告诉我们x是y的一个因子,而x是z的倍数,那么必然Y也是z的倍数。
对于选项A,分母是z,结果为x是z的几倍+1,必然是整数。
对于选项B,分母是x,y/x是整数,但是z/x却不一定是整数,所以选择B。
转载请注明原文地址:https://tihaiku.com/zcyy/3969614.html
相关试题推荐
Ifx,yandzarepositiveintegerssuchthatxisafactorofy,andxisamul
Howmanyevenintegersarebetween17/4and47/2?A、9B、8C、6D、5E、4A[img]2022m
Whatarethefactorsof60?1260=1×60=2×30=3×20=4×15=5×12=6×10,所以60有1,2,3,4,5,6,1
Whatisthetotalnumberofintegersbetween100and200thataredivisibleby3
QuantityA:pandqaretwoconsecutivepositiveintegersTheremainderwhenthe
WhichofthefollowingnumbersisNOTthesumofthreeconsecutiveoddintegers?
Howmanypositiveintegersnaretheresuchthat30nisadivisorof(23)×(3)×(5
Whatisthetotalnumberofintegersbetween100and300thataredivisibleby
WhichofthefollowingintegersdoesNOThaveafactorgreaterthan1thatisth
Ifx,y,andzarepositiveintegersand2x=3y=5z=7w,thentheleastpossibleva
随机试题
Whatisthemessagemainlyabout?[originaltext]Goodafternoon.ThisisSophieK
Tinypiecesofgoldcouldbeusedinthefightagainstcancer,newresearchh
JohnWilliam’shouseismadeof______.[br][originaltext]Morethan40ye
Fromaworldofsilence,deafpercussionistEvelynGlenniebroughtsomeof
58岁妇女,GP,主诉阴道掉出肿物1年,伴排尿困难近3个月,每于咳嗽或大笑时有尿
饮片库房相对湿度保持在A.21℃B.25℃C.37℃D.95%E.75%
责任保险承保的是( )。[2005年真题]A.刑事责任 B.行政责任 C.
男性,60岁,心窝部饥饿性疼痛10余年,近年来发作频繁,疼痛规律消失,经胃镜证实
(2020年真题)以下选项属于期货交易所职能的有()。A.制定并实施期货市场交
碘剂治疗甲亢用于 A.甲亢危象、术前准备 B.甲亢危象、妊娠 C.应激
最新回复
(
0
)