more than 1000
20 people came to climb mount Everest
25
During the British Mount Everest expeditions of the 1920's, the British teams were the only climbers on the mountain at the time, they saw no other climbers.
Today, there would be lots of climbers, sometimes many hundreds heading for the summit of Mount Everest at the same time.
Around 5,000 people from all over the world have reached the summit of Mount Everest to date
The climbers on Mount Everest during the 1920's expeditions only saw there team mates as there were no other people on the mountain at the same time
Climbers who climb on Mount Everest come from all over the world.
How many people attempt to climb Mount Everest every year?
In the Mount Everest climbing season of 2009 there was 462 climbers who reached the summit.
There is no 'slowest' person to climb Mount Everest. All climbers have a set time to climb the mountain before turning around.
Joe Simpson has never attempted to climb Mount Everest, that doesn't mean he never will.
Climbers risk their lives by climbing on Mount Everest for the thrill, challenge and adventure.