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

What have one eye but still cannot see?

I am the beginning of the end, and the end of time and space. I am essential to creation, and I surround every place. What am I?

The Puzzle: A girl, a boy, and a dog start walking down a road.

They start at the same time, from the same point, in the same direction.

The boy walks at 5 km/h, the girl at 6 km/h.

The dog runs from boy to girl and back again with a constant speed of 10 km/h. The dog does not slow down on the turn.
How far does the dog travel in 1 hour?

I have a head like a cat and feet like a cat, but I am not a cat. What am I?

Three ants are going up a hill, one behind the other. The last ant then says to the other ants, 'There is an ant behind me!'' How come?

How can you take 2 from 5 and leave 4?

My first is in chocolate but not in ham. My second is in cake and also in jam. My third at tea time is easily found. Altogether, this is a friend who is often around. What is it?

In four steps you need to move the word 'cold' From 'warm' by replacing one alphabet at a time such that every word formed at each step is acceptable in English Dictionary.

They came out at night, without being called.
They lost at day, without being stolen.
Who are they?