Can someone provide a real, correct and genuine sources.list for Ubuntu 15.04? [duplicate]

I have been using Ubuntu for a while now and I have been having all problems that I needed not to post a thread for to get answers, until I recently upgraded to Ubuntu Vivid.

Ubuntu is great but each time I run sudo apt-get update I have a smooth run of update which return a notice of a duplicate in /var/lib/apt/lists.

That is not even where the problem lies. What is very frustrating is that even when I run the proposed update, it still produces the same result.

I was using Ubuntu 14.04 then I upgraded to Ubuntu Utopic before upgrading to Vivid.

All I need is someone to please provide a compact without duplicates source list.

Please.

Thank you all in advance.

Edit: This is the new error I got from reloading the software-properties-gtk.

W: Duplicate sources.list entry http://security.ubuntu.com/ubuntu/ vivid-security/restricted i386 Packages (/var/lib/apt/lists/security.ubuntu.com_ubuntu_dists_vivid-security_restricted_binary-i386_Packages)
W: Duplicate sources.list entry http://security.ubuntu.com/ubuntu/ vivid-security/universe i386 Packages (/var/lib/apt/lists/security.ubuntu.com_ubuntu_dists_vivid-security_universe_binary-i386_Packages)
W: Duplicate sources.list entry http://security.ubuntu.com/ubuntu/ vivid-security/multiverse i386 Packages (/var/lib/apt/lists/security.ubuntu.com_ubuntu_dists_vivid-security_multiverse_binary-i386_Packages)
W: Duplicate sources.list entry http://security.ubuntu.com/ubuntu/ vivid-security/main i386 Packages (/var/lib/apt/lists/security.ubuntu.com_ubuntu_dists_vivid-security_main_binary-i386_Packages)
W: You may want to run apt-get update to correct these problems

Here is my virgin sources.list

Duplicates can also arise when entries are included in sources.list and in the files in the folder /etc/apt/sources.list.d.

# deb cdrom:[Ubuntu-GNOME 15.04 _Vivid Vervet_ - Alpha amd64 (20150316)]/ vivid main multiverse restricted universe

# See http://help.ubuntu.com/community/UpgradeNotes for how to upgrade to
# newer versions of the distribution.
deb http://archive.ubuntu.com/ubuntu vivid main restricted
deb-src http://archive.ubuntu.com/ubuntu vivid main restricted

## Major bug fix updates produced after the final release of the
## distribution.
deb http://archive.ubuntu.com/ubuntu vivid-updates main restricted
deb-src http://archive.ubuntu.com/ubuntu vivid-updates main restricted

## N.B. software from this repository is ENTIRELY UNSUPPORTED by the Ubuntu
## team. Also, please note that software in universe WILL NOT receive any
## review or updates from the Ubuntu security team.
deb http://archive.ubuntu.com/ubuntu vivid universe
deb-src http://archive.ubuntu.com/ubuntu vivid universe
deb http://archive.ubuntu.com/ubuntu vivid-updates universe
deb-src http://archive.ubuntu.com/ubuntu vivid-updates universe

## N.B. software from this repository is ENTIRELY UNSUPPORTED by the Ubuntu 
## team, and may not be under a free licence. Please satisfy yourself as to 
## your rights to use the software. Also, please note that software in 
## multiverse WILL NOT receive any review or updates from the Ubuntu
## security team.
deb http://archive.ubuntu.com/ubuntu vivid multiverse
deb-src http://archive.ubuntu.com/ubuntu vivid multiverse
deb http://archive.ubuntu.com/ubuntu vivid-updates multiverse
deb-src http://archive.ubuntu.com/ubuntu vivid-updates multiverse

## N.B. software from this repository may not have been tested as
## extensively as that contained in the main release, although it includes
## newer versions of some applications which may provide useful features.
## Also, please note that software in backports WILL NOT receive any review
## or updates from the Ubuntu security team.
deb http://archive.ubuntu.com/ubuntu vivid-backports main restricted universe multiverse
deb-src http://archive.ubuntu.com/ubuntu vivid-backports main restricted universe multiverse

deb http://archive.ubuntu.com/ubuntu vivid-security main restricted
deb-src http://archive.ubuntu.com/ubuntu vivid-security main restricted
deb http://archive.ubuntu.com/ubuntu vivid-security universe
deb-src http://archive.ubuntu.com/ubuntu vivid-security universe
deb http://archive.ubuntu.com/ubuntu vivid-security multiverse
deb-src http://archive.ubuntu.com/ubuntu vivid-security multiverse

## Uncomment the following two lines to add software from Canonical's
## 'partner' repository.
## This software is not part of Ubuntu, but is offered by Canonical and the
## respective vendors as a service to Ubuntu users.
# deb http://archive.canonical.com/ubuntu vivid partner
# deb-src http://archive.canonical.com/ubuntu vivid partner

You can remove duplicates with Y PPA Manager:

sudo add-apt-repository ppa:webupd8team/y-ppa-manager
sudo apt-get update
sudo apt-get install y-ppa-manager

Run Y PPA Manager

Select Advanced

Select Scan and remove duplicate PPAs

When this is complete, then start an update:

sudo apt-get update

This one should do (make sure to replace us with your country prefix):

deb http://us.archive.ubuntu.com/ubuntu/ vivid main universe restricted multiverse
deb-src http://us.archive.ubuntu.com/ubuntu/ vivid main universe restricted multiverse

deb http://us.archive.ubuntu.com/ubuntu/ vivid-security main universe restricted multiverse
deb-src http://us.archive.ubuntu.com/ubuntu/ vivid-security main universe restricted multiverse

deb http://us.archive.ubuntu.com/ubuntu/ vivid-updates main universe restricted multiverse
deb-src http://us.archive.ubuntu.com/ubuntu/ vivid-updates main universe restricted multiverse