I had tried to reset it, but it glitched and re-entered my old sample test. I've gotten it to submit now. Thanks!

then reset the trainer and don't overcomplicate the things. ;) (there is almost nothing to do ;) )

I have tried, but every time I do, it throws a compilation error saying that the name of the class isn't visible.

there are no sample tests, actually (and those should have been left blank...). Just directly submit.

. (duplicate...)

These are the errors I get:

fixture.cs(10,24): error CS0103: The name 'CustomMath' does not exist in the current context fixture.cs(11,24): error CS0103: The name 'CustomMath' does not exist in the current context

I wasn't able to pass the sample test until I changed it to actually test my code rather than the strings supplied. I'm thinking that C# may not be working at the moment.

I can't get it to work still, but I may need to remove my edits to the sample tests to get it to work. Perhaps I can revert the sample test to its original state and then attempt as though I never changed it. We'll see. Thank you for confirming that it may not be my coding or oblivity to other errors.

If you already fixed the obvious error it should work. The sample test is for you to edit (TDD), or you can click Attempt directly.

I have been struggling to figure this one out in C# even after getting it down in one or two other languages. I'm not sure if I'm overlooking something obvious or not, but it seems to me like the full test cases are not finished or are demanding a more creative implementation of the task. I've corrected the obvious error, but I can't figure out why my actual attempts are failing. It appears as though the full battery of tests is not calling the method you implemented, which seems silly. I would appreciate any hints/guidance on this, but no spoilers please. I need to figure this one out.