OK fact fans, let's get some facts!
The summit of Everest is 8848 meters above sea level, or 8850 (if you measure from the snow, rather than the bed rock). Although there are many routes to the top, 95% of all summit attempts use either the south (Nepalese) col route, or the north (Tibetan) col route. Of the two routes, the split is about 45% - 55% in favour of the south side. There are a number of routes on the mountain which have never been climbed (many with a more than 100% death rate - as more people have tried the route than have got to the top). For all routes, 85% of deaths happen on the way down, making reaching the summit a bit of a double edged sword.