What goes up but never comes down?

A man is walking down a road with a basket of eggs. As he
is walking he meets someone who buys one-half of his eggs
plus one-half of an egg.
He walks a little further and meets another person who buys
one-half of his eggs plus one-half of an egg.
After proceeding further he meets another person who buys
one-half of his eggs plus one half an egg. At this point, he
has sold all of his eggs, and he never broke an egg.
How many eggs did the man have to start with?

What is in seasons, seconds, centuries and minutes but not in decades, years or days?

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.

What two things can you never eat for breakfast?

If six children and two dogs were under an umbrella, how come none of them got wet?

Why is the Hole below a Lock?

A plane crashed between the border of Mexico and America. Where do you bury the survivors?

Two in a corner, one in a room, zero in a house, but one in a shelter. What is it?

What has a bottom at the top?