diff --git a/docs/1-trial-session/09-functions/_samples/max-no-else/index.html b/docs/1-trial-session/09-functions/_samples/max-no-else/index.html
deleted file mode 100644
index ca212b868..000000000
--- a/docs/1-trial-session/09-functions/_samples/max-no-else/index.html
+++ /dev/null
@@ -1,10 +0,0 @@
-
-
-
-
- max関数 解答例
-
-
-
-
-
diff --git a/docs/1-trial-session/09-functions/_samples/max-no-else/script.js b/docs/1-trial-session/09-functions/_samples/max-no-else/script.js
deleted file mode 100644
index 7327845bb..000000000
--- a/docs/1-trial-session/09-functions/_samples/max-no-else/script.js
+++ /dev/null
@@ -1,8 +0,0 @@
-function max(a, b) {
- if (a > b) {
- return a;
- }
- return b;
-}
-
-document.write(`${4}と${7}のうち大きいのは${max(4, 7)}です。`);
diff --git a/docs/1-trial-session/09-functions/index.mdx b/docs/1-trial-session/09-functions/index.mdx
index ede6bbe7a..cebaefb5d 100644
--- a/docs/1-trial-session/09-functions/index.mdx
+++ b/docs/1-trial-session/09-functions/index.mdx
@@ -189,23 +189,6 @@ function max(a, b) {
-:::note
-
-`a > b`が`true`の場合、if文内部の`return`で関数実行が中断されるため、`else`キーワードは必ずしも必要ではありません。そのため、次のように書くこともできます。
-
-```javascript
-function max(a, b) {
- if (a > b) {
- return a;
- }
- return b;
-}
-```
-
-
-
-:::
-
## 演習問題2（発展）