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

Forwards I am heavy, backward I am not. What am I?

Spot the cat in the picture below

You need to move three matchsticks to form three squares. Can you do it?

You have a roll of cloth 1km long. You have a machine which cuts this roll into pieces of 10-meter-long cloth.

How long would it take for the machine to cut the roll if each cut took 4 secs?

What is a word made up of 4 letters, yet is also made up of 3. Sometimes is written with 9 letters, and then with 4. Rarely consists of 6, and never is written with 5.

What goes up but never comes down?

What number comes next in the series?

5 15 5 18 5 24 14 20 _

What 5-letter word typed in all capital letters can be read the same upside down?

I shave every day, but my beard stays the same. What am I?