What exception occurs if you invoke the 'remove(x)' method on a Python list where the value 'x' does not exist?

What will be the output of the following Python code? L = [1, 1, 2, 1, 5, 4, 1, 3, 1] print(L.index(L.count(1)))

Given the list L = [10, 50, 20, 40, 30], which of the following print statements will result in a TypeError?

How do you insert the element 'X' at the beginning of a list L in Python?