Not working?

Being easier is not an issue. 8 kyu is meant for the basics.

too easy

Dear Developer,
I think that there is no point of making such easy exercises, because there are a lot of them.

Best Regards,
Vahagn

I think that there is no point of making such easy exercises because there are already a lot of them

Best Regards
Vahagn

Random r = new Random();
means that you create an object of type Random, new Random() initializes it, later you can use later to generate random numbers by calling
r.Next(); which returns a non-negative random integer
Next(Int32); returns a non-negative random integer that is less than the specified maximum
Next(Int32, Int32); returns a random integer that is within a specified range

Note that it is somewhat similar to creating an array, list, or an object of the type of a class
int[] i = new int[5]; You create i of type int[] and initialize it specifying its size which is 5
List l = new List(); You create l of type list and initialize it

if we have a class named TheClass, we can use its methods and public variables by making an object of its type and initializing it
class TheClass
{
public int n = 0;
}

class CallerClass
{
TheClass obj = new TheClass();
int nFromTheClass = obj.n; // nFromTheClass will be 0
}

If you have any other questions, please do not hesitate to ask,
Thank you for the question

'Random r = new Random();'
Can anyone explain how does this work?

Thanks!