Before Mount Everest was discovered, what was the highest mountain in the world?

A mules travels the same distance daily.
I noticed that two of his legs travels 10km and the remaining two travels 12km.
Obviously two mules legs cannot be a 2km ahead of the other 2.

The mules is perfectly normal. So how come this be true ?

John, Jack and Jill are in a desert. John doesn't like Jill and hence decides to murder him. He poisons the water supply of Jill. Since it is a desert area, Jill must drink or he will die of thirst.

Jack does not know of the actions of John and also decides to murder Jill. To succeed in his ill motives, he removes the water supply of Jill so he dies of thirst.

Jill dies due to thirst. Who murdered Jill?

What does this rebus riddle mean?

It has a long neck, A name of a bird, Feeds on cargo of ships, It's not alive,

What is it?

Prove that twice of ten is the same as twice of eleven.

What is the word or phrase?

Can you start the fire using two pieces of wood?

How many cubic feet of dirt are in a hole of one foot deep, three feet long, and two feet wide?

What has many keys but can’t open a single lock?