Which 'package' to choose for updating google chrome ?

[Trudi <trudisparkle@hotmail.com>]

Hi
I am using an ASUS Transformer Book.
Not only are there no useful manuals but also no help from Asus either online OR by telephone, issues go unsolved. It's annoying since they are not cheap.
My issue is that the android/tablet part of the Asus Transformer keeps saying google chrome needs updating. 
It has a link to the google page BUT you have to choose a package. the problem is there are 4 different packages to chose from AND absolutely no help (even when i call their technical hotline). Which to choose?
The options are:

Please select your download package:

 32 bit .deb (For Debian/Ubuntu)
 64 bit .deb (For Debian/Ubuntu)
 32 bit .rpm (For Fedora/openSUSE)
 64 bit .rpm (For Fedora/openSUSE)

I'm assuming i need 64bit bt which one? Does it matter?
Thanks in advance
Trudi