Question 1: What is the output of the following code?

print('ab' * 3)

a) ababab

b) ab3

c) abab

d) Error

Question 2: What is the result of `5 // 2` in Python?

a) 2

b) 2.5

c) 3

d) None of the above

Question 3: What is the default order of elements in a dictionary as of Python 3.7?

a) Ascending order

b) Descending order

c) Insertion order

d) Random order

Question 4: Which function is used to read the entire content of a file as a string in Python?

a) read()

b) readline()

c) readlines()

d) readfile()

Question 5: What will be the output of the following code?

print('Hello', end='@')

a) Hello

b) Hello@

c) Hello@end

d) Error

Question 6: Write a Python program to find the square of each number in a given list using a list comprehension.

Question 7: Write a Python program that takes a tuple as input and converts it into a list.

Question 8: Explain the use of `continue` statement in Python loops with an example.

Question 9: Write a Python program to find the index of an element in a list. If the element is not in the list, print a message indicating that it is not found.

Question 10: Explain the concept of slicing in Python strings with an example.

Question 11: Write a Python program to swap the values of two variables without using a third variable.

Question 12: Write a Python function that accepts a list of numbers and returns a list of the even numbers.

Question 13: Explain the use of the `enumerate()` function in Python with an example.

Question 14: Write a Python program that accepts a dictionary from the user and prints the keys and values in separate lists.

Question 15: Write a Python program to find the factorial of a number using recursion.

Question 16: Write a Python program that reads a text file and prints the number of lines, words, and characters in the file.

Question 17: Write a Python program to implement a simple calculator that can add, subtract, multiply, and divide two numbers.

Question 18: Write a Python program to remove duplicates from a list and keep the order of the remaining elements.

Question 19: Write a Python program that reads a string and prints the number of uppercase letters, lowercase letters, digits, and whitespace characters.

Question 20: Write a Python program to count the frequency of each word in a given string.

Question 21: Write a Python program that simulates a simple library management system. The system should be able to add, view, update, and delete books (CRUD operations) and should also handle basic input validation.