diff --git a/app/evaluation.py b/app/evaluation.py
index 79484b7..760bc9c 100644
--- a/app/evaluation.py
+++ b/app/evaluation.py
@@ -19,12 +19,16 @@ def evaluation_function(response, answer, params) -> dict:
     to output the grading response.
     """
 
-    rtol = params.get("rtol", 0)
-    atol = params.get("atol", 0)
+    if isinstance(answer, list):
+        rtol = 0
+        atol = (answer[1]-answer[0])/2
+        answer = (answer[1]+answer[0])/2
+    else:
+        rtol = params.get("rtol", 0)
+        atol = params.get("atol", 0)
 
     is_correct = None
     real_diff = None
-
     real_diff = abs(response - answer)
     allowed_diff = atol + rtol * abs(answer)
     is_correct = real_diff <= allowed_diff
diff --git a/app/evaluation_tests.py b/app/evaluation_tests.py
index c297065..9bc1979 100644
--- a/app/evaluation_tests.py
+++ b/app/evaluation_tests.py
@@ -192,6 +192,18 @@ def test_relative_absolute_incorrect(self):
 
         self.assertEqual(response.get("is_correct"), False)
 
+    def test_range_in_answer(self):
+        response = 1e6
+        params = {}
+
+        answer = [1e5,3e7]
+        result = evaluation_function(response, answer,params)
+        self.assertEqual(result.get("is_correct"), True)
+
+        answer = [1e5,5e5]
+        result = evaluation_function(response, answer,params)
+        self.assertEqual(result.get("is_correct"), False)
+
 
 if __name__ == "__main__":
     unittest.main()