I speak without a mouth, and hear without ears. I have no-body, but I come alive with the wind. What am I?

Which English verb becomes past tense just by rearranging the letters?

The centre of the third figure is empty. What digit should fit inside?

Can you start the fire using two pieces of wood?

What can go up a chimney down, but can’t go down a chimney up?

What goes through cities and fields, but never moves?

One day Jenifer meets the Lion and the Tiger in the Forest of Forgetfulness. She knows that the Lion lies on Mondays, Tuesdays, and Wednesdays, and tells the truth on the other days of the week. The Tiger, on the other hand, lies on Thursdays, Fridays, and Saturdays, but tells the truth on the other days of the week. Now they make the following statements to Jenifer:

Lion: Yesterday was one of my lying days.

Tiger: Yesterday was one of my lying days too.

What day is it?

What is the riddle which can be asked all day with a different correct answer each time.

Luis Garavito killed Density x Volume.

Who is Luis Garavito ?

An octopus has 8 legs. A hippogriff has 6 legs and 2 pairs of wings. A sphinx has 6 legs and one pair of wings. Now we have all 3 kinds and a total of 18 insects in a cage. We have a total of 118 legs and 20 pairs of wings. How many insects do we have of each kind?