input: Write a python function to find the maximum and minimum of three numbers.
  assert findMinMax(10, 20, 30) == (30, 10)
  assert findMinMax(5, 8, 2) == (8, 2)
  assert findMinMax(15, 15, 15) == (15, 15)
output: def findMinMax(a, b, c):
      maximum = max(a, b, c)
      minimum = min(a, b, c)
      return (maximum, minimum)