diff --git a/Lucky Numbers b/Lucky Numbers
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+++ b/Lucky Numbers	
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+// C++ program for Lucky Numbers 
+#include <bits/stdc++.h> 
+using namespace std; 
+#define bool int 
+
+/* Returns 1 if n is a lucky no. 
+otherwise returns 0*/
+bool isLucky(int n) 
+{ 
+	static int counter = 2; 
+	
+	/*variable next_position is just for 
+	readability of the program we can 
+	remove it and use n only */
+	int next_position = n; 
+	if(counter > n) 
+		return 1; 
+	if(n % counter == 0) 
+		return 0; 
+	
+	/*calculate next position of input no*/
+	next_position -= next_position / counter; 
+	
+	counter++; 
+	return isLucky(next_position); 
+} 
+
+// Driver Code 
+int main() 
+{ 
+	int x = 5; 
+	if( isLucky(x) ) 
+		cout << x << " is a lucky no."; 
+	else
+		cout << x << " is not a lucky no."; 
+} 
+
+// This code is contributed 
+// by rathbhupendra