<story><title>Probability 101, the intuition behind martingales and solving problems with them</title><url>https://codeforces.com/blog/entry/110801</url></story><parent_chain></parent_chain><comment><author>nerdponx</author><text>I like to see good math topics, but I really can&amp;#x27;t stand when the example problems are either totally fanciful or totally abstract. I&amp;#x27;m too stupid for that. Give me an example of a practical problem in business, finance, engineering, social science, etc. that I can solve with this tool. Does the &amp;quot;dance party&amp;quot; problem have an analogue in real-world allocation and planning problems? Does a gambler gambling an &lt;i&gt;infinite&lt;/i&gt; number of times have practical applications in finance? Etc.</text></comment>
<story><title>Probability 101, the intuition behind martingales and solving problems with them</title><url>https://codeforces.com/blog/entry/110801</url></story><parent_chain></parent_chain><comment><author>spapas82</author><text>This gives a mathematical martingale. I only know the betting strategy martingale &lt;a href=&quot;https:&amp;#x2F;&amp;#x2F;en.m.wikipedia.org&amp;#x2F;wiki&amp;#x2F;Martingale_(betting_system)&quot; rel=&quot;nofollow&quot;&gt;https:&amp;#x2F;&amp;#x2F;en.m.wikipedia.org&amp;#x2F;wiki&amp;#x2F;Martingale_(betting_system)&lt;/a&gt;</text></comment>