def isSimpleNumeric(x):
   """
   returns True if x is has type int or float; anything else, False
   >>> isSimpleNumeric(5)
   True
   >>> isSimpleNumeric(3.5)
   True
   >>> isSimpleNumeric("5")
   False
   >>> isSimpleNumeric([5])
   False
   >>> isSimpleNumeric(6.0221415E23)
   True
   >>>
   """

   return ((type(x)==int) or (type(x)==float))