1分,2分,5分硬币共100枚,共值2.5元,其中2分硬币和5分硬币同样多,问三种硬币各有多少枚?不要方程
题目
1分,2分,5分硬币共100枚,共值2.5元,其中2分硬币和5分硬币同样多,问三种硬币各有多少枚?不要方程
答案
举一反三
我想写一篇关于奥巴马的演讲的文章,写哪一篇好呢?为什么好
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