input: Write a function to find the minimum and maximum numbers in a list.
  assert minMax([1, 2, 3, 4, 5, 6, 7, 8, 9, 10]) == (1, 10)
  assert minMax([10, 20, -5, 67, 84, 93]) == (-5, 93)
  assert minMax([5, 7, 9, 8, 6, 4, 3]) == (3, 9)
output: def minMax(lst):
      return (min(lst), max(lst))