Fix math

app/main.py

@@ -52,7 +52,7 @@ class AnswerResponse(BaseModel):
 # -----------------
 
 TOTAL_QUESTIONS = 20
-DURATION_SECONDS = 60
+DURATION_SECONDS = 300
 
 
 class Session:
@@ -78,7 +78,7 @@ class Session:
     @staticmethod
     def _generate_questions(n: int) -> List[Dict]:
         # Build unique unordered pairs (avoid mirrored duplicates like 6×8 and 8×6)
-        all_pairs = [(a, b) for a in range(2, 10) for b in range(a, 10)]  # a <= b
+        all_pairs = [(a, b) for a in range(2, 6) for b in range(a, 6)]  # a <= b
         count = min(n, len(all_pairs))
         picked = random.sample(all_pairs, count)