diff --git a/pages/总复习2023t1.md b/pages/总复习2023t1.md
index c736070..01febd8 100644
--- a/pages/总复习2023t1.md
+++ b/pages/总复习2023t1.md
@@ -2623,10 +2623,12 @@
 							  2. all outcomes are equally likely to occur.
 						- **Geometric** if
 							- (i) the sample space is a measurable (such as length, area,
-							  volume, etc.) region, i.e., 0 < L(Ω) < ∞, and
+							  volume, etc.) region, i.e., $$0 < L(Ω) < ∞$$, and
 							- (ii) the probability of every event A ⊂ Ω is proportional to the
 							  measure L(A) and has nothing to do with its position and
 							  shape.
+						- The **Frequency** Interpretation of Probability
+							-
 					- Problems of Each Interpretation of Probability
 					- Similarity of the Above Interpretations of probability
 					- Summary