diff --git a/Questions.md b/Questions.md
index c6cf006..783a71e 100644
--- a/Questions.md
+++ b/Questions.md
@@ -11,19 +11,18 @@
 7. [Search in Rotated Sorted Array](https://leetcode.com/problems/search-in-rotated-sorted-array/description/) `Blind 75` `Leetcode 150` `Striver`
 8. [3sum](https://leetcode.com/problems/3sum/description/) `Blind 75` `Leetcode 150` `Striver`
 9. [Container With Most Water](https://leetcode.com/problems/container-with-most-water/description/) `Blind 75` `Leetcode 150`
-10. [Merge Intervals](https://leetcode.com/problems/merge-intervals/description/) `Blind 75` `Leetcode 150` `Striver`
-11. [Set Matrix Zeroes](https://leetcode.com/problems/set-matrix-zeroes/description/) `Blind 75` `Leetcode 150` `Striver`
-12. [Maximum Subarray](https://leetcode.com/problems/maximum-subarray/description/) `Leetcode 150` `Striver`
-13. [Rotate Image](https://leetcode.com/problems/rotate-image/description/) `Blind 75` `Leetcode 150` `Striver`
-14. [Merge Sorted Array](https://leetcode.com/problems/merge-sorted-array/description/) `Leetcode 150` `Striver`
-15. [Find the Duplicate Number](https://leetcode.com/problems/find-the-duplicate-number/description/) `Striver`
-16. [Search a 2D Matrix](https://leetcode.com/problems/search-a-2d-matrix/description/) `Leetcode 150` `Striver`
-17. [Pow(x, n)](https://leetcode.com/problems/powx-n/description/) `Leetcode 150` `Striver`
-18. [Majority Element](https://leetcode.com/problems/majority-element/description/) `Leetcode 150` `Striver`
-19. [Longest Consecutive Sequence](https://leetcode.com/problems/longest-consecutive-sequence/description/) `Leetcode 150` `Striver`
-20. [Longest Substring Without Repeating Characters](https://leetcode.com/problems/longest-substring-without-repeating-characters/description/) `Leetcode 150` `Striver`
-21. [Spiral Matrix](https://leetcode.com/problems/spiral-matrix/description/) `Blind 75` `Leetcode 150`
-22. [Word Search](https://leetcode.com/problems/word-search/description/) `Blind 75` `Leetcode 150`
+10. [Set Matrix Zeroes](https://leetcode.com/problems/set-matrix-zeroes/description/) `Blind 75` `Leetcode 150` `Striver`
+11. [Maximum Subarray](https://leetcode.com/problems/maximum-subarray/description/) `Leetcode 150` `Striver`
+12. [Rotate Image](https://leetcode.com/problems/rotate-image/description/) `Blind 75` `Leetcode 150` `Striver`
+13. [Merge Sorted Array](https://leetcode.com/problems/merge-sorted-array/description/) `Leetcode 150` `Striver`
+14. [Find the Duplicate Number](https://leetcode.com/problems/find-the-duplicate-number/description/) `Striver`
+15. [Search a 2D Matrix](https://leetcode.com/problems/search-a-2d-matrix/description/) `Leetcode 150` `Striver`
+16. [Pow(x, n)](https://leetcode.com/problems/powx-n/description/) `Leetcode 150` `Striver`
+17. [Majority Element](https://leetcode.com/problems/majority-element/description/) `Leetcode 150` `Striver`
+18. [Longest Consecutive Sequence](https://leetcode.com/problems/longest-consecutive-sequence/description/) `Leetcode 150` `Striver`
+19. [Longest Substring Without Repeating Characters](https://leetcode.com/problems/longest-substring-without-repeating-characters/description/) `Leetcode 150` `Striver`
+20. [Spiral Matrix](https://leetcode.com/problems/spiral-matrix/description/) `Blind 75` `Leetcode 150`
+21. [Word Search](https://leetcode.com/problems/word-search/description/) `Blind 75` `Leetcode 150`
 
 ### Topic: Linked Lists
 1. [Reverse Linked List](https://leetcode.com/problems/reverse-linked-list/description/) `Blind 75` `Striver`
@@ -38,3 +37,11 @@
 10. [Rotate List](https://leetcode.com/problems/rotate-list/description/) `Leetcode 150` `Striver`
 11. [Copy List with Random Pointer](https://leetcode.com/problems/copy-list-with-random-pointer/description/) `Leetcode 150` `Striver`
 12. [Trapping Rain Water](https://leetcode.com/problems/trapping-rain-water/description/) `Leetcode 150` `Striver`
+
+### Topic: Intervals
+1. [Merge Intervals](https://leetcode.com/problems/merge-intervals/description/) `Blind 75` `Leetcode 150` `Striver`
+2. [Insert Interval](https://leetcode.com/problems/insert-interval/description/) `Blind 75` `Leetcode 150`
+3. [Non-overlapping Intervals](https://leetcode.com/problems/non-overlapping-intervals/description/) `Blind 75`
+4. [Summary Ranges](https://leetcode.com/problems/summary-ranges/description/) `Leetcode 150`
+5. [Minimum Number of Arrows to Burst Balloons](https://leetcode.com/problems/minimum-number-of-arrows-to-burst-balloons/description/) `Leetcode 150`
+6. [Meeting rooms II](https://www.interviewbit.com/problems/meeting-rooms/) `Blind 75`