What do you answer even though it never asks you questions?

In a certain country ½ of 5 = 3. If the same proportion holds, what is the value of 1/3 of 10?

What does below chemistry rebus means?

After teaching his class all about Roman numerals (X = 10, IX=9 and so on) the teacher asked his class to draw a single continuous line and turn IX into 6. The teacher's only stipulation was that the pen could not be lifted from the paper until the line was complete.

What came first, the chicken or the egg?

John went to a parrot shop in Mexico, and the parrot owner told him that his parrot is so unique that he repeats everything he hears. John got excited and immediately bought the parrot. John went home and spoke many words, but the parrot does not repeat anything.
He went again to the parrot shop and complaint to the shopkeeper, but the shopkeeper never lied. Explain?

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

Can it be possible to build a house that has all its four walls facing towards the South?

I have a big mouth and I am also quite loud! I am NOT a gossip but I do get involved with everyone's dirty business.

In the figure, you can see nine stars. What you have to do is connect all of them by using just four line and without lifting your hand i.e. in a continuous flow.