From c4950dfb23d1fe8cca7cb523d9ae4ea4b4dda2d5 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Gustav=20S=C3=B6rn=C3=A4s?= <gustav@sornas.net>
Date: Fri, 21 Jan 2022 13:28:45 +0100
Subject: move files

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+Also known as the "happy face formula", since we are happy whenever we get to
+use it.
+
+If all outcomes are equally likely, then
+
+$$P(A) = \frac{\mathrm{N}(A)}{\mathrm{N}(S)}$$
+
+We can sometimes count using this directly, but usually we need counting
+techniques.
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