1. ( Python) Create a function named `calculate_product` that receives an arbitrary argument list and returns the product of all the arguments.

Run the function with the arguments 5, 10, and 20.

2. ( Python) Create a list called numbers containing the values from 1 through 10, then use the list to perform the following operations:

a. Slice containing the first four elements and show the resulting list.

b. Slice every other element of the list, then show the resulting list.