Find the errors:

L1 = [3, 3, 8, 1, 3, 0, '1', '0', '2', 'e', 'w', 'e', 'r']
print(L1[: :-1])
print(L1[-1:-2:-3])
print(L1[-1:-2:-3:-4])

What will be the output of following code?

x = ['3', '2', '5']
y = ''
while x:
    y = y + x[-1]
    x = x[:len(x) - 1]
print(y)
print(x)
print(type(x), type(y))

Let nums2 and nums3 be two non-empty lists. Write a Python command that will append the last element of nums3 to the end of nums2.

Consider the following code and predict the result of the following statements.

bieber = ['om', 'nom', 'nom']
counts = [1, 2, 3]
nums = counts
nums.append(4)

1. counts is nums
2. counts is add([1, 2], [3, 4])