Update README.md

Author: kishanrajput23

README.md

@@ -310,3 +310,10 @@ Description: Write a function raceWithTimeout that takes an array of promises an
 
 Solution Approach: Use Promise.race and a timeout promise.
 ```
+
+## Challenge 30
+```
+Description: Implement a throttle function that ensures a given function is not called more than once in a specified time interval.
+
+Solution Approach: Use a timestamp to track the last invocation time and prevent calling the function if it's within the throttle interval.
+```