Question 3.1: Write a Python function named "is_even" that takes an integer as input and returns True if the number is even, and False otherwise. Question 3.2: Write a Python function named "reverse_string" that takes a string as input and returns the reverse of the input string. Question 3.3: Write a Python function named "find_max" that takes a list of numbers as input and returns the maximum value from the list. Question 3.4: Write a Python function named "validate_password" that takes a string as input and checks if it is a valid password. A valid password should meet the following criteria: • It must be at least 8 characters long. • It must contain at least one uppercase letter, one lowercase letter, and one dig

Answer 3.1:

Here is the Python function "is_even" that takes an integer as input and returns True if the number is even, and False otherwise:

def is_even(num):
    if num % 2 == 0:
        return True
    else:
        return False

Answer 3.2:

Here is the Python function "reverse_string" that takes a string as input and returns the reverse of the input string:

def reverse_string(input_str):
    return input_str[::-1]

Answer 3.3:

Here is the Python function "find_max" that takes a list of numbers as input and returns the maximum value from the list:

def find_max(nums):
    max_num = nums[0]
    for num in nums:
        if num > max_num:
            max_num = num
    return max_num

Answer 3.4:

Here is the Python function "validate_password" that takes a string as input and checks if it is a valid password:

def validate_password(password):
    if len(password) < 8:
        return False
    has_uppercase = False
    has_lowercase = False
    has_digit = False
    for char in password:
        if char.isupper():
            has_uppercase = True
        elif char.islower():
            has_lowercase = True
        elif char.isdigit():
            has_digit = True
    if has_uppercase and has_lowercase and has_digit:
        return True
    else:
        return False