URLs:
  random number between 1.. parameter
    http://kursusp6.herokuapp.com/hello4?max=100
  
  JSON for exercise data pair, [parameter] pairs
    [["2", "5"], ["7", "3"], ... ]
   http://johiv6.herokuapp.com/numberList?count=5
	
  HTML page with [parameter] exercises, numeric fiels to enter answers
  http://springbootpro1.herokuapp.com/exrcises?count=50