diff --git a/Task 3/Q1/iit2025018/armstrong.cpp b/Task 3/Q1/iit2025018/armstrong.cpp
new file mode 100644
index 0000000..3c84081
--- /dev/null
+++ b/Task 3/Q1/iit2025018/armstrong.cpp	
@@ -0,0 +1,24 @@
+#include<iostream>
+#include<stdlib.h>
+#include<vector>
+#include<set>
+using namespace std;
+
+int main(){
+    	int n;
+		cin>>n;
+		int k=n;
+		int ans=0;
+		while(k>0){
+			int a=k%10;
+			ans+= a*a*a;
+			a/=10;
+		}
+		if(ans==n){
+			cout<<"yes";
+		}else{
+			cout<<"no";
+		}
+		return 0;
+}
+
diff --git a/Task 3/Q1/iit2025018/calculator.cpp b/Task 3/Q1/iit2025018/calculator.cpp
new file mode 100644
index 0000000..d3d41ef
--- /dev/null
+++ b/Task 3/Q1/iit2025018/calculator.cpp	
@@ -0,0 +1,22 @@
+#include <iostream>
+using namespace std;
+int main(){
+	int x,y;
+	cout<<"enter the numbers:";
+	char a;
+	cin>>a;
+	if(a=='+'){
+		cout<<x+y;
+		}
+
+	else if(a=='-'){
+
+		cout<<x-y;
+		}
+	else if(a=='*'){
+		cout<<x*y;
+	}
+	else {
+		cout<<x/y;
+		}
+	}
diff --git a/Task 3/Q1/iit2025018/calculator.txt b/Task 3/Q1/iit2025018/calculator.txt
new file mode 100644
index 0000000..453e3be
--- /dev/null
+++ b/Task 3/Q1/iit2025018/calculator.txt	
@@ -0,0 +1 @@
+calulator is a machine that performs mathematical operations.