Problem 1:

• Construct a list that has the integers 1 through 5 in it. Use the square bracket notation for lists.
• Construct the same list, but do not use the square bracket notation. Instead use :: and [].
• Construct the same list again. This time, the following expression must appear in your answer: [2; 3; 4]. Use the @ operator, and do not use ::.

Problem 2:

Write a function that returns the product of all the elements in a list. The product of all the elements of an empty list is 1.

Problem 3:

Write a function that concatenates all the strings in a list. The concatenation of all the strings in an empty list is the empty string "".

Please use Ocaml for the coding