diff --git a/README.md b/README.md
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--- a/README.md
+++ b/README.md
@@ -1,3 +1 @@
-> Learning Python Programming . . . 
-
-> Learning Python Programming Language 
+lesson 6
\ No newline at end of file
diff --git a/lesson6.py b/lesson6.py
new file mode 100644
index 0000000..6c622c1
--- /dev/null
+++ b/lesson6.py
@@ -0,0 +1,34 @@
+# function
+numbers = [1,2,3,4,5]
+# print(len(numbers))
+
+# import math
+import math
+# num = int(input('Enter number to make square root'))
+# print('Answer of {} is : {} '.format(num,math.sqrt(num)))
+
+# programmer defined functions
+# def ppt_function():
+    # print('this is def function')
+
+# ppt_function()
+    
+# add substract multiply and division
+def add(a,p):
+    return print('added value is : ',a+p)
+
+def substract(a,p):
+    return print('subtracted value is : ',a-p)
+
+def multiply(a,p):
+    return print('multiply value is : ', a*p)
+
+def division(a,p):
+    return print('divided value is : ', a/p)
+
+add(5,4)
+substract(5,4)
+multiply(5,4)
+division(5,4)
+print('Calculated')
+