I have no life, but I can die. What am I?

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

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

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

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

A man and a dog were going down the street. The man rode, yet walked. What was the dog’s name?

If a wheel has 54 spokes, how many spaces are there between the spokes?

Twice ten are six of us,

Six are but three of us,

Nine are but four of us;

What can we possibly be?

Would you know more of us?

Twelve are but six of us,

Five are but four, do you see?

What are we?

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)?

If an electric train is travelling south, then which way is the smoke going?