Whats a question with no answer called?

Answer 1

Rhetorical.

Answer 2

I don't know, but it's not rhetorical.

A rhetorical question is one that has only one logical / sensible answer, and therefore needn't be answered;

i.e. "Do we really want to start world war 3?"
The only logical answer being "No, of course we don't!" so you don't need to say it! It's obvious!

Of course, some people would give an illogical /nonsensical answer just for the sake of being a pain in the neck;

"Are you going to EAT that chocolate, or are you going to sit with it on your lap until it melts all over your skirt?"
reply; "Neither, I'm going to stick one third of it in your left ear, one third in your right ear, and the other third up your #@¢!!!"

Answer 3

try one of these:

CONUNDRUM
"A paradoxical, insoluble, or difficult problem; a dilemma"
http://www.thefreedictionary.com/conundrum

ENIGMA
"One that is puzzling, ambiguous, or inexplicable."
http://www.thefreedictionary.com/enigma

DILEMMA
"2. Usage Problem A problem that seems to defy a satisfactory solution."
http://www.thefreedictionary.com/dilemma

Answer 4

i don't know, but that answer above is funny as sh!t!!!!