首页
登录
职称英语
Two hundred multiples of seven are chosen at random, and 300 multiples of eight
Two hundred multiples of seven are chosen at random, and 300 multiples of eight
游客
2024-01-14
8
管理
问题
Two hundred multiples of seven are chosen at random, and 300 multiples of eight are chosen at random. Approximately what percentage of the 500 selected numbers are odd?
选项
A、20%
B、25%
C、40%
D、5O%
E、80%
答案
A
解析
All multiples of 8 are even, and half of the multiples of 7 are odd; the multiples of 7 make up 2/5 of the total, so if 1/2 of those multiples of 7 are odd, then 1/5 of the total will be odd, or 20%.
转载请注明原文地址:https://www.tihaiku.com/zcyy/3360353.html
相关试题推荐
We’vetestedthreehundredtypesofboots,______iscompletelywaterproof.A、no
Ahundredyearsagoitwasassumedandscientifically"proved"byeconomists
Ahundredyearsagoitwasassumedandscientifically"proved"byeconomists
Ahundredyearsagoitwasassumedandscientifically"proved"byeconomists
Ahundredyearsagoitwasassumedandscientifically"proved"byeconom
Ahundredyearsagoitwasassumedandscientifically"proved"byeconom
在古镇的中心有上百棵老树。Therearehundredsoftreesinthemiddleoftheancienttown.
Twohundredmultiplesofsevenarechosenatrandom,and300multiplesofeight
Threehundredmultiplesofthreearepickedatrandom,andthreehundredmultipl
Forhundredsofyears,pearldivershavegatheredpearlsdirectlyfrommollusks
随机试题
RodneyMace,35,ismarriedwithtwoyoungchildren,andisapart-timeteac
Inpolicework,youcanneverpredictthenextcrimeorproblem.Noworking
[originaltext]W:I’malittleworriedaboutJill.Shehasgotabadcold,yets
楼层梯段相邻踏步高差不应大于10mm;每踏步两端宽度差不应大于10mm,旋转楼梯
以下属于无机纤维状天然节能材料的是()。A.岩棉 B.石棉 C.玻璃棉
列宁对党内的同志说:“我们在夺取政权后就知道,不存在将资本主义制度具体改造成社会
为了描述城市土地利用的情况,可以采用的空间数据方式为( )。A.离散点 B.
1907年()签订后,两大对立的帝国主义军事集团最终形成A.法俄同盟 B.英
如果投资者的实际保证金率低于最低保证金率,以下说法不正确的是()。A:投资者在资
以下符合《机动车发票使用办法》的是()。A.机动车发票包括销售新机动车和二
最新回复
(
0
)