## Pages

### Example python programs: Functions basics

Simple python programs to practice:

1) Write a Python function Factorial(n) which returns the factorial of the given number(n).

2) Write a Python function, Square(num) which returns the square of the given number(num).

3) Write a Python function, Sum(n) which returns the sum of first n numbers.

4) Write a Python function, Palindrome(num) that accepts an integer num as input and returns true/false based on condition.

Ex: num = 12321 ---> output = 12321 ----> then given number is palindrome.

5) Write a Python function, check_strong_number(num) that accepts a positive as input, and return true/false based on condition.
• A number is said to be a Strong number if the sum of the factorial of each digit is equal to the given number.
Ex: 145 is strong number as (1! =1) + (4! = 24) + (5! = 120) = 145.

### Lists in Python

What is List?
• List is one of the most common collection datatypes in Python which is ordered and mutable (changeable).
• It is used to store a group of an element together in a sequence.
• List can store both homogenous and heterogeneous elements i.e., a single list may contain data types like integers, floats, strings as well as objects.
• Individual value in a list is called as elements.
• These elements will be stored in a contiguous memory location.
For Ex:  Number1 = 10
Number2 = 20
Number3 = 30,
Number4 = 40
• These individual variables can be represented in a list as
Number_list = [ 10, 20, 30, 40 ]