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

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

When my father was 31 I was 8. Now he is twice as old as me. How old am I?

A professor thinks of two consecutive numbers between 1 and 10.
'A' knows the 1st number and 'B' knows the second number

A: I do not know your number.
B: Nor do I know your number.
A: Now I know.

What are the four solutions for this?

I always drive my customer away.

Who am I?

The Little ant seems to be always confused. Do you know why?

You have a square. What you have to do is cut and reassemble the square such that you create a Red Cross sign that has the same volume as that of the square.

Alpha is Beta's sister.

Gamma is a Beta mother.

Delta is Gamma's father.

Tango is Delta's mother.

Then,

How is Alpha related to Delta?

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

Twenty frogs are sitting on a log floating on the surface of a river. Two of them decide to jump off into the water.

How many frogs are there on the log at this moment?