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沐天雪 2022-1-20 17:36
请看:https://cutt.us/6q6
肺炎,外媒报道国内民众求救的一线视频的图片......

翻红墙,看禁闻,请打开网址:https://v.ht/rmmm





















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数论爱好者 2021-9-11 14:09
8120是4位数,从1到8120的所有数全部按4位数算:8120*4=32480位,但它有1位数,2位数,3位数,存在其中,所以把一位数变四位数,添上去的数必须减去,才是真实的,以此类推
数论爱好者 2021-9-11 14:03
三位数在前面添一个0,比如912变成0912,这样可以统一按4位数算,然后把添上数减掉.
数学故事中,分牛问题,借来一只牛,把问题解决好后,又把那只牛牵走,起个过渡作用,把问题大大简化,简单易算
数论爱好者 2021-9-5 20:37
你怎么用繁体字?哪里人呢?注册比我晚,水平比我高.

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