How to solve this task?

remove is a method so the argument you give it goes in parens () not brackets []. brackets are for slice notation.

states = [ 'ACTIVE',['red', 'green', 'blue'],'CANCELLED','FINISHED',5,]

states.remove(5)

this is also not working

in the first task you are passing the actual element to the remove method (it is one way that will work). so states.remove(5) will remove the 5 from the list and you will pass task 1. in task 2 it wants you to remove the list of colors. you can again pass the actual element, the list of colors, as the argument for remove, or use slice notation to identify the element in the states list to be removed.

i just passed task 1 again with states.remove(5). in all the challenges, if it says a previously passed task no longer passes, it is usually because of an error in the way you are answering a later task. i just passed task 2 again without changing what i had put for task 1. what are you putting for task 2?

It states that remove is not defined