Web designer asp.net Visual Basic and c#

The questions in the picture

The exercise: 1-write a C# function MathOps that takes as argum ent an array arr of double elements. This function returns an array that contains the sum, product and the average values of the entered values 2- Write an ASP.NET code that allows you to obtain the following figure. The dropdown list in this form includes 2 items: Elementary School and Middle School. Practice mathematical operations Name E-mail Educational stage Elementary School Numbers Calculate Result Using the function Mathops write a C# code that allows you to render the sum, product and average values when the button Calculate is clicked on as it is shown in the figure below. 3- Practice mathematical operations Name Maha E-mail driss.boulila@gmail.com Educational stage Middle School Numbers 10 20 Calculate Result 3s 1000 11.6