A:
I don't think it does. I bought a mouse separately. Usually when other items are included, they will be mentioned. The items I've seen that have both a mouse and a keyboard aren't as nice. I should have my keyboard by Thursday. Can post a new comment for you then. And with installation of a Bluetooth item, updating drivers might be necessary. If not then any new Bluetooth device might not be recognized by your pc.
I run both Windows 10 and Linux Mint 19. The mouse I have, had to update the Windows 10 drivers. With Linux, if you use that and have kernel 2.6+ then you're good to go.