diff --git a/Efficient way to multiply with 7 b/Efficient way to multiply with 7
new file mode 100644
index 0000000..03bffb1
--- /dev/null
+++ b/Efficient way to multiply with 7	
@@ -0,0 +1,21 @@
+# include<bits/stdc++.h> 
+
+using namespace std; 
+//c++ implementation 
+long multiplyBySeven(long n) 
+{ 
+	/* Note the inner bracket here. This is needed 
+	because precedence of '-' operator is higher 
+	than '<<' */
+	return ((n<<3) - n); 
+} 
+	
+/* Driver program to test above function */
+int main() 
+{ 
+	long n = 4; 
+	
+	cout<<multiplyBySeven(n); 
+	
+	return 0; 
+}