diff --git a/README.md b/README.md
index 4bc26db..1ed19df 100644
--- a/README.md
+++ b/README.md
@@ -274,7 +274,7 @@ Sometimes the classes are not in session so you have to wait a couple of months,
 ## Interview Process & General Interview Prep
 
 - [ ] [How to Pass the Engineering Interview in 2021](https://davidbyttow.medium.com/how-to-pass-the-engineering-interview-in-2021-45f1b389a1)
-- [x] [Whiteboarding](https://medium.com/@dpup/whiteboarding-4df873dbba2e#.hf6jn45g1)
+- [ ] [Whiteboarding](https://medium.com/@dpup/whiteboarding-4df873dbba2e#.hf6jn45g1)
 - [ ] [Demystifying Tech Recruiting](https://www.youtube.com/watch?v=N233T0epWTs)
 - [ ] How to Get a Job at the Big 4:
     - [ ] [How to Get a Job at the Big 4 - Amazon, Facebook, Google & Microsoft (video)](https://www.youtube.com/watch?v=YJZCUhxNCv8)
@@ -1783,6 +1783,7 @@ You're never really done.
     - [Computer Science 70, 001 - Spring 2015 - Discrete Mathematics and Probability Theory](http://www.infocobuild.com/education/audio-video-courses/computer-science/cs70-spring2015-berkeley.html)
     - [Discrete Mathematics by Shai Simonson (19 videos)](https://www.youtube.com/playlist?list=PLWX710qNZo_sNlSWRMVIh6kfTjolNaZ8t)
     - [Discrete Mathematics Part 1 by Sarada Herke (5 videos)](https://www.youtube.com/playlist?list=PLGxuz-nmYlQPOc4w1Kp2MZrdqOOm4Jxeo)
+    - [Discrete Mathematics By IIT Ropar NPTEL](https://nptel.ac.in/courses/106/106/106106183/)
 
 - ### Machine Learning
     - Why ML?