I have an eye but still cannot see.

Who am I?

The dirtier I get, the whiter I look. Who am I?

How many times can you subtract the number two from the number fifty?

What breaks yet never falls, and what falls yet never breaks?

I am the fastest animal but cannot climb the tree. What am I?

I am looking for a word that change both gender and number when i add the letter 'S'.

What Word am I Looking For ?

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

When I go in I might cause pain. I cause you to spit and ask you not to swallow. I can fill your hole. What am I?

I get hot but I never sweat,
I cook food but I am not a chef,
I have a door but you can't enter me,
I have a light but I am not a lamp.
Who am I?

During which month do people sleep the least?