I am white when I am dirty, and black when I am clean. What am I?

What is the longest word in the dictionary?

I’m light as a feather, yet the strongest person can’t hold me for five minutes. What am I?

If eleven plus two equals one, what does nine plus five equal?

I have some blue and red sock in my drawer. I have a total of 4 socks. I pick 2 socks and the chance that I get a pair of red socks is 1/2.

What is the chance of picking a pair of blue socks?

What has six faces, but does not wear makeup, has twenty-one eyes, but cannot see?

Take away the whole and some still remain. What is it?

Lifeless eyes on my smiling face and watch your child's sleeping place. In their dreams they hold me tight. What am I?

You bought me for dinner but never eat me. What am I?

You have a basket containing ten apples. You have ten friends, who each desire an apple. You give each of your friends one apple.
Now all your friends have one apple each, yet there is an apple remaining in the basket.
How?