updated answers using python

Basics/Exercise/2_variables/2_variables_exercise.md

@@ -1,14 +1,27 @@
 ### Exercise: Python Variables
 1. Create a variable called break and assign it a value 5. See what happens and find out the reason behind the behavior that you see.
-2. Create two variables. One to store your birth year and another one to store current year. Now calculate your age using these two variables
-3. Store your first, middle and last name in three different variables and then print your full name using these variables
-4. Answer which of these are invalid variable names: 
+A) gives the syntax error .because we cant an inbuilt keyword as an variable
+3. Create two variables. One to store your birth year and another one to store current year. Now calculate your age using these two variables
+A)
+a = 2021
+b = 2001
+print(" ur age is {}".format(a-b))
+5. Store your first, middle and last name in three different variables and then print your full name using these variables
+A)
+a="kuruva "
+b = "diwakar "
+c = "babu"
+print(a+b+c)
+7. Answer which of these are invalid variable names: 
  _nation
  1record
  record1
  record_one
  record-one
  record^one
  continue
+ A) record-one
+ record^one
+ continue
 
- [Solution](https://github.com/codebasics/py/blob/master/Basics/Exercise/2_variables/2_variables_exercise.ipynb)
+ [Solution](https://github.com/codebasics/py/blob/master/Basics/Exercise/2_variables/2_variables_exercise.ipynb)