I tried that before, and it was returning both even and odds. I tried it again and the same exact code I previously wrote works now. No clue what was different, but it works! Thank you!

I'm using javascript, and in every single test it is giving tests that have both even numbers and odd numbers. I have read the description over and over, and it looks like it's supposed to give either one even in a group of odds, or one odd in a group of evens. Maybe I'm missing something, but I don't think it's supposed to give multiple of each.

Lesson learned: read instructions very well haha