https://a-moment096.github.io/zh/tags/math-problems/Recent content in Math Problems on A Moment's RestHugo -- gohugo.iozhFri, 26 Jun 2026 15:20:58 +0000https://a-moment096.github.io/zh/posts/math_note/factorial_last_digits/Mon, 25 Aug 2025 18:01:23 +0800https://a-moment096.github.io/zh/posts/math_note/factorial_last_digits/<img src="https://a-moment096.github.io/images/%E6%B8%85%E6%B0%B4%E5%90%9F.jpg" alt="Featured image of post 2025! 非零的最后一位数字是多少？" /><p><em>在知乎上看到了<a class="link" href="https://www.zhihu.com/question/666502327" target="_blank" rel="noopener" >这样一个有趣的问题</a>，以及<a class="link" href="https://www.zhihu.com/question/666502327/answer/18810753693" target="_blank" rel="noopener" >很厉害的回答</a>，实在是很有意思。这里就写一写我的解决这个问题的方法以及当时的心路历程吧。</em></p> <p><em>头图出自 <a class="link" href="https://www.pixiv.net/en/users/8605991" target="_blank" rel="noopener" >fasnakegod</a> 大大的 <a class="link" href="https://www.pixiv.net/en/artworks/124177921" target="_blank" rel="noopener" >清水吟</a>，搭配的曲子是 <a class="link" href="https://ddby.jp/" target="_blank" rel="noopener" ><strong>DDBY</strong></a> 的 <em>Cramped space</em>，笛声真的很棒，搭配轻快的鼓组和旋律，给人一种很悠闲放松的感觉呢。希望你也喜欢~</em></p>