What brings you down but never up?

It is always ahead of me yet I can never see it. What is it?

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

Sachin bought a car with a strange 5 digit numbered plate.The water image of the number is 78633 more than my car number. All the digits of car number are distinct.

What is the original number on number plate?

I have one of the three numbers: 1, 2, or 3 in my mind. I speak only truth. You can ask me just one question for which I will only reply in yes or no or don't know. What question will you ask from me so that you are able to know the number?

Can you name an animal whose killing cannot be performed without spilling your own blood?

A man dies of old age on his 25 birthday. How is this possible?

What is the below Rebus indicate?

Luis Garavito killed Density x Volume.

Who is Luis Garavito ?

I know a nine-letter word having only one vowel.
Do you ?