diff --git a/Questions.md b/Questions.md
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@@ -22,4 +22,5 @@
 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`