No.

Yes

Idk its 50/50 everyone loves a comback

No.

I doubt it but we will see.

Hopefully.

if it's an uptempo dance track + "The Voice" promo works for her, I say it's possible.

It's certainly possible!

No

"Moves Like Jagger" (Maroon 5 featuring Christina Aguilera) - 2011 - #1
"Lady Marmalade" (with Lil' Kim, Mýa and Pink) - 2001 - #1

I'd guess we'd need another decade and a solid feature/duet for this to happen eventhough she's desperate for a #1 (Max Martin and all...)

No.

Yes

I don't think so.

Because that has worked so well out for her in the past I know it's Max Martin but I still hope it's not completely sleep-inducing.

It's possible, but more likely no.

Yes!

No, but I'd like it to, but hardly anything gets to #1 anymore, only the really, really massive hits.

I actually think it'll do bad for Christina if she does a dance song. On iTunes atm:

1. Flo Rida
4. fun.
6. Phillip Phillips
8. Pink
11. Little Big Town
12. Alex Clare
13. Justin Bieber
14. Jason Aldean
15. Neon Trees
16. Gotye
17. Gym Class Heroes
18. Jason Mraz
19. Hunter Hayes

Let's look at the facts here, and not jump around the point. Most of the songs in the top 20 are NOT dance songs. I think Christina is more likely to have a big hit if she does something more acoustic/altnernative/adult contemporary sounding. I think if she does another dance tune like Not Myself Tonight, it might flop/underperform again.

Have any of here solo singles ever gone #1? Not trolling, this is a serious question.

I'd need to hear to judge the position.