diff --git a/single_number.cpp b/single_number.cpp
new file mode 100644
index 0000000000..d9e6e0a769
--- /dev/null
+++ b/single_number.cpp
@@ -0,0 +1,11 @@
+class Solution {
+public:
+    int singleNumber(vector<int>& nums) {
+       int x=0;
+       for(int i=0;i<nums.size();i++){
+        x=nums[i]^x;
+       }
+
+       return x;
+    }
+};