input: Write a python function to print elements of a list in reverse order.
  assert print_reversed([10, 15, 20]) == [20, 15, 10]
  assert print_reversed(['a', 'b', 'c']) == ['c', 'b', 'a']
  assert print_reversed([1]) == [1]
output: def print_reversed(lst):
      return lst[::-1]