Right Answer:
# Step 1
binary_tuple = (0, 0, 1, 0, 1, 1)
# Step 2
count_zeros = binary_tuple.count(0)
print(count_zeros) # Output: 3
# Step 3
index_of_first_one = binary_tuple.index(1)
print(index_of_first_one) # Output: 2
# Step 4
del binary_tuple # Deleting the tuple
Right Answer:
# Step 1
months = ("Jan", "Feb", "Mach", "Apr")
# Step 2
# Trying to correct the typo will raise an error as tuples are immutable.
# Step 3 - Explanation
# Tuples are immutable, meaning we cannot change their items directly.
# Step 4
months_list = list(months) # Converting tuple to list
# Step 5
months_list[2] = "March" # Correcting the typo
# Step 6
months = tuple(months_list) # Converting the list back to a tuple
# Step 7
print(months) # Output: ('Jan', 'Feb', 'March', 'Apr')
Right Answer:
# Step 1
matrix = [
[1, 2, 3],
[4, 5, 6],
[7, 8, 9]
]
# Step 2
print(matrix[2][1]) # Output: 8
# Step 3
print(matrix[1]) # Output: [4, 5, 6]
# Step 4
third_column = [row[2] for row in matrix]
print(third_column) # Output: [3, 6, 9]
# Step 5
diagonal = [matrix[i][i] for i in range(len(matrix))]
print(diagonal) # Output: [1, 5, 9]
Right Answer:
# Step 1
days = ["Monday", "Tuesday", "Wendesday", "Thursday", "Friday"]
# Step 2
days[2] = "Wednesday" # Correcting the typo
# Step 3
print(days) # Output: ['Monday', 'Tuesday', 'Wednesday', 'Thursday', 'Friday']
Right Answer:
# Step 1
fishes = ["catfish", "perch", "cod", "carp"]
# Step 2
print(fishes[-1]) # Output: carp (using negative index)
print(fishes[3]) # Output: carp (using positive index)
# Step 3
fishes[1] = "salmon" # Changing the second element to "salmon"
# Step 4
print(fishes) # Output: ['catfish', 'salmon', 'cod', 'carp']
Right Answer:
# Step 1
animals = ["cat", "dog", "apple"]
# Step 2
animals.remove("apple") # Removing "apple" from the list
# Step 3
print(animals) # Output: ['cat', 'dog']
# Step 4
animals.append("rabbit") # Adding "rabbit" to the list
# Step 5
print(animals) # Output: ['cat', 'dog', 'rabbit']
Right Answer:
# Step 1
numbers = [3, 4, 5, 1, 2]
# Step 2
user_number = int(input("Enter a number: "))
# Step 3
if user_number > max(numbers):
print("Your number is higher than the maximum of the list.")
else:
print("Your number is lower than or equal to the maximum of the list.")
# Step 5 - Alternative method
maximum = sorted(numbers)[-1] # Sorting to find the max value
if user_number > maximum:
print("Your number is higher than the maximum of the list.")
else:
print("Your number is lower than or equal to the maximum of the list.")
Right Answer:
# Step 1
num1 = float(input("Enter first number: "))
num2 = float(input("Enter second number: "))
num3 = float(input("Enter third number: "))
# Step 2
num_tuple = (num1, num2, num3)
# Step 3 and Step 4
if num1 + num2 > num3:
print(num_tuple[::-1]) # Print the tuple in reverse
else:
print(num_tuple) # Print the tuple normally
Right Answer:
# Step 1
first_list = [0, 1, 2, 3, 4]
# Step 2
copy_list = first_list # This is an assignment, not a true copy
# Step 3
copy_list[-1] = 9 # Modify the last element of copy_list
# Step 4
print(first_list) # Output: [0, 1, 2, 3, 9]
# Step 5 - Explanation
# Both `first_list` and `copy_list` refer to the same list in memory, so changes to one affect the other.
# Step 6 - Correct way to copy the list
copy_list = first_list.copy() # Use the .copy() method for a true copy
# Verifying by modifying copy_list again
copy_list[-1] = 8
print(first_list) # Output: [0, 1, 2, 3, 9] (no change in first_list)
print(copy_list) # Output: [0, 1, 2, 3, 8] (change only in copy_list)
Right Answer:
# Step 1
colors = ["red", "blue", "green", "yellow", "pink"]
# Step 2
print(colors[1]) # Output: blue
print(colors[3]) # Output: yellow
# Step 3
grades = ("A", "B", "C", "D", "F")
# Step 4
print(grades[0]) # Output: A
print(grades[-1]) # Output: F