python

What is the time complexity of accessing an element by index in a list in Python?

• a) O(1)

• b) O(n)

• c) O(log n)

• d) O(n^2)

What will the following code output?

lst = [1, 2, 3, 4]

lst[1:3] = [9, 8]

print(lst)

• [1, 9, 8, 4]

• [1, 2, 9, 8, 4]

• [1, 9, 8]

• Error

What is the output of the following code?

lst = [1, 2, 3]

lst.insert(1, 10)

print(lst)

• a) [1, 10, 2, 3]

• b) [10, 1, 2, 3]

• c) [1, 2, 3, 10]

• d) Error

How would you remove all elements from a list lst?

• a) lst.clear()

• b) lst.remove()

• c) lst.delete()

• d) lst.reset()

What will the following code output?

lst = [5, 10, 15, 20]

lst[1:3] = [8, 12]

print(lst)

• a) [5, 8, 12, 20]

• b) [5, 8, 12, 15, 20]

• c) [5, 8, 12]

• d) [5, 8, 12, 15, 20]

What will be the output of the following code?

my_set = {1, 2, 3, 4, 5}

my_set.add(5)

print(my_set)

• a) {1, 2, 3, 4, 5}

• b) {5, 1, 2, 3, 4}

• c) {1, 2, 3, 4, 5, 5}

• d) Error

What is the result of the following operation?

a = {1, 2, 3}

b = {3, 4, 5}

result = a & b

print(result)

• a) {1, 2}

• b) {3}

• c) {3, 4, 5}

• d) {1, 2, 3, 4, 5}

Which of the following operations is used to remove a random element from a set?

• set.remove()

• set.pop()

• set.discard()

• set.delete()

What will be the output of the following code?

my_set = {10, 20, 30, 40}

my_set.discard(50)

print(my_set)

• a) {10, 20, 30, 40, 50}

• b) Error

• c) {10, 20, 30, 40}

• d) {50, 10, 20, 30, 40}

What is the output of the following code?

t = (1, 2, 3, 4)

t = t + (5,)

print(t)

• a) (1, 2, 3, 4, 5)

• b) (1, 2, 3, 4)

• c) (5, 1, 2, 3, 4)

• d) Error