There are are five things wrong with this sentence; only geniuses will be able to to spot all of the mitstakes

What brings you down but never up?

A new Engineering building containing 100 offices had just been completed. John was hired to paint the numbers 1 to 100 on the doors. How many times will John have to paint the number nine (9)?

I am under you when I am whole.
I shift above you if you remove the first letter.
I come all around you if you remove the second as well.

Can you tell me who I am?

Why did the Girl throw the butter out of the window?

The more of this there is, the less you see. What is it?

What three numbers, none of which is zero, give the same result whether they’re added or multiplied?

In 1990, a person is 15 years old. In 1995, that same person is 10 years old. How can this be?

Find the value of "?" in the ball picture Riddle below:

If a zookeeper had 100 pairs of animals in her zoo, and two pairs of babies are born for each one of the original animals, then (sadly) 23 animals don’t survive, how many animals do you have left in total?