Well there is doubt on it. It would be Everest. 29,035Ft or 8,850M. Check it: http://www.infoplease.com/ipa/A0001771.html
It's Everest unless some mountain somewhere decided to outdo Everest and speed up it's growth somehow.
well i wouldn't say its the tallest "mountain" in the world, in a way i think there were saying there are mountains under water that could be like 2-3 as tall as everest and the tops are actually islands.
It's everest that is the highest peak. But not the highest mountain (can't remember what it's called but it's pretty much all underwater and it's bigger than everest)
highest peak........or mountain............are dey one and same thing.......??????? if mountain den EvereSt but there is some cliff which is under ocean...and protudes outwards...... i din't remember..........it height is more than everest