How to unfriend someone on Facebook without knowing them?

How to unfriend someone on Facebook? If you have a requirement of removing someone from your friend lists then, you can do so very easily by applying some settings in your Facebook account. Click on the link here to get more details on this. Open your Facebook account and then go to that person's profile that you want to unfriend and then, tap on “friends” option and select “unfriend”. With these simple settings on Facebook account, you can easily unfriend someone from your friend list.