input: Write a function to find the maximum and minimum numbers from a list of numbers.
  assert find_max_min([1, 5, 10, 3, 9, 4]) == (10, 1)
  assert find_max_min([10, 20, 30, 40, 50]) == (50, 10)
  assert find_max_min([-1, -5, -10, 0, 5, 10]) == (10, -10)
output: def find_max_min(numbers):
      max_num = max(numbers)
      min_num = min(numbers)
      return (max_num, min_num)