diff --git a/calculator.py b/calculator.py
index a3521ec..9fa58b0 100644
--- a/calculator.py
+++ b/calculator.py
@@ -16,6 +16,14 @@ def multiply(x, y):
 def divide (x, y):
      """"this function divides two numbers"""
      return x/y
+
+def remainder(x,y):
+    """"this function produce remainder of two numbers"""
+    return x%y
+
+def power(x,y):
+    """"left operand raised to the power of right"""
+    return x**y
     
 # take input from user
 print("select operation.")
@@ -23,7 +31,10 @@ def divide (x, y):
 print("2.subtract")
 print("3.multiply")
 print("4.divide")
-option=input("Enter option(1/2/3/4): ")
+print("5.Remainder")
+print("6.Exponent power")
+
+option=input("Enter option(1/2/3/4/5/6): ")
  
 num1 = int(input("Enter first number: "))
 num2 = int(input("Enter second number: "))
@@ -41,6 +52,12 @@ def divide (x, y):
 elif option == '4':
     print(num1, "/", num2,"=", divide(num1,num2))
     
+elif option == '5':
+    print(num1, "R", num2,"=", remainder(num1,num2))
+    
+elif option == '6':
+    print(num1, "^", num2,"=", power(num1,num2))
+    
 else:
     print("error!invalid input")     
-    
\ No newline at end of file
+