If your instructor has said that you must work independently on a take-home test, you cannot work in a group.
This is inappropriate collaboration. Once you have the test questions, you are not allowed to discuss them with anyone else.
Remember: you can only work together on a take-home exam if your instructor says it's okay!
Graphic by Sara LeBlanc, University of Waterloo. Text adapted from University of Waterloo Library (CC-BY-NC).