What number when divided in half becomes zero?

Why is the longest human nose just 11 inches?

By moving exactly three matchsticks can you make the below equation true.It can be solved by 3 ways.

Can it be possible to build a house that has all its four walls facing towards the South?

The person who makes it has no need for it; the person who buys it has no use for it. The person who uses it can neither see nor feel it. What is it?

The following "Brain Bat" means Slow Down.
S
L
O
W

Using the same logic, can you tell us what does the following Brain Bat means ?
E
V
I
G

You are playing as white and given four rooks to checkmate the black king in four moves with the following rules 1. You can place one rook every move and ensure the black king should be in check position.2. After four moves the black king should be in the checkmate position.

What can run but never walks, has a mouth but never talks, has a head but never weeps, has a bed but never sleeps?

I am the one who remains awake when you sleep. But I need to rest when you awake. Who Am I?

Which country gets ill every time?