diff --git a/题库0.3/Problems.json b/题库0.3/Problems.json
index c333b41d..25507f80 100644
--- a/题库0.3/Problems.json
+++ b/题库0.3/Problems.json
@@ -591891,7 +591891,7 @@
     },
     "021764": {
         "id": "021764",
-        "content": "已知$|\\overrightarrow {a}|=4$, $|\\overrightarrow {b}|=5$, $|2 \\overrightarrow{a}-3 \\overrightarrow {b}|=7$, 求$|2 \\overrightarrow {b}-\\overrightarrow{3 a}|$的值.",
+        "content": "已知$|\\overrightarrow {a}|=4$, $|\\overrightarrow {b}|=5$, $|2 \\overrightarrow{a}-3 \\overrightarrow {b}|=7$, 求$|2 \\overrightarrow {b}-3\\overrightarrow{ a}|$的值.",
         "objs": [],
         "tags": [
             "第五单元"
@@ -591913,6 +591913,7 @@
         "origin": "2025届高一下校本作业",
         "edit": [
             "20230209\t王伟叶",
+            "20240216\t王伟叶",
             "20240216\t王伟叶"
         ],
         "same": [],