Arrange the method definitions in boxes 
according to which method definition they could overwrite in the succeeding class.



List 1: Valid calculate Methods - calculate(int first, int second)
calculate(int a, int b)
calculate(int num1, int num2)


List 2: Valid average Methods - average(double a, int b)
average(double a, int b)
average(double first, int second)


List 3: Invalid/Non-Matching Methods
calculate(double n1, double n2)
calculate(int a, int b, int c)
calculate(int num1, double num2)
aveage(int num) [Misspelled/Incorrect parameters]
average(int a, double b)
average(int first, double second)