Solution: How many ways can 5 keys be arranged in a keychain? engr 3 years ago Facebook Prev Article Next Article (Last Updated On: December 8, 2017) Problem Statement: How many ways can 5 keys be arranged in a keychain? Problem Answer: There are 24 ways to arrange 5 keys in a keychain. Solution: Rate this: Facebook Prev Article Next Article Add Comment Cancel reply Notify me of follow-up comments by email. Notify me of new posts by email.