python question

The second function you will write should be called sumNumbers. Your function should take three (3) arguments: each one an integer between 0 and 100. The function should return one (1) integer. The output integer shall be the sum of three lists of numbers. Each list will be defined by one of the input arguments as follows. If n is the value of an input argument, then the list corresponding to that input argument shall start with n and contain n elements. For example, if the first input argument contains 3, then the corresponding list shall be [3, 4, 5]; 2 yields [2, 3]; and 4 yields [4, 5, 6, 7]. Your function should build all three lists, corresponding to the three input variables, and return the sum of all the elements of all three lists.

Example Test Case: sumNumbers(2, 3, 4) returns 39