added

I don't really see how that's possible. Is this for JS? Try submitting again.

See ZozoFouchtra post below.

Have you figured it out?
I am having same problem, although I'm having additional 8 tests failing as well. One from instructions checks out tho.

It's difficult to say without seeing your code. But before posting, please check this and this point in the FAQ, they might be helpful.

if you have question then you should mark it as question and answer to your question, no fries in other category

Okay, but first you should know you need to use the spoiler tag when posting code. (I have added the tag) Second, you should post every single piece of the code. Third, use proper markdown to make it easier to read.

This is the feeback for test: where (in this case) the expected answer is 1, but your code did not pass because it returned 10 instead.

Both expect 26 as the result.