What number when divided in half becomes zero?

Which is heavier: a ton of bricks or a ton of feathers?

What can go up a chimney down, but can’t go down a chimney up?

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

The Little ant seems to be always confused. Do you know why?

How can you throw a ball as hard as you can and have it come back to you even if it doesn't hit anything there is nothing attached to it and no one else catches or throws it.

What is red and smells like blue paint?

Can you make the number 24 by utilizing the numbers 1, 3, 4 and 6? You must use one number only one time and you can use mathematical operation symbols anytime anywhere.

Until it is measured, not known. Yet how you miss it when it has gone. What is it?

In a basket of apples,
when counted in twos, there was one extra
when counted in threes, there were two extra when counted in fours, there were three extra
when counted in fives, there were four extra
when counted in sixes, there was five extra.

However, if the apples were counted in sevens, no extra apple was left. Can you calculate the minimum number of apples that were present in the basket?