input: Write a python function to find the minimum and maximum numbers in a list.
  assert get_min_max([1, 2, 3, 4, 5]) == (1, 5)
  assert get_min_max([10, 20, 30, 40, 50]) == (10, 50)
  assert get_min_max([-5, -1, 0, 1, 5]) == (-5, 5)
output: def get_min_max(numbers):
      return (min(numbers), max(numbers))