问题标题:
Ajarcontains(装有)onlyred,green,andbluemarbles(玻璃球).Ifitisthreetimesaslikely(可能)thatyourandomlypick(随意选择)aredmarbleasagreenmarble,andfivetimesaslikelythatyoupickagreenoneasablueone.Whichofthe
问题描述:
Ajarcontains(装有)onlyred,green,andbluemarbles(玻璃球).Ifitisthreetimes
aslikely(可能)thatyourandomlypick(随意选择)aredmarbleasagreenmarble,and
fivetimesaslikelythatyoupickagreenoneasablueone.Whichofthe
followingcouldbethenumberofmarblesinthejar?(翻译并解答)
华伟亢回答:
一个罐子里面只装着红,绿,蓝三种颜色的玻璃球.你随机取一个红色玻璃球的机会是取出一个绿色玻璃球的三倍,你选随机取出一个绿色玻璃球的机会是取出一个蓝色的玻璃球的五倍.下列哪项可能是罐子玻璃球的总数?答:由题意...
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