There is one thing that goes round the house and also inside the house but never even share a brief touch. What is it?

I have a head like a cat and feet like a cat, but I am not a cat. What am I?

The King of a distant land had heard that Birbal was one of the wisest men in the East and so desired to meet Birbal. He sent Birbal an invitation to visit his country.

In due course, Birbal arrived in the distant kingdom. When he entered the palace he was flabbergasted to find not one but six kings seated there. All looked alike. All were dressed in kingly robes. Who was the real king?

The very next moment he got his answer. Confidently, he approached the king and bowed to him.

How did Birbal know who was the real king?

Find The Next Number in this series.
1, 2, 6, 42, 1806 ?

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

Below is the sum of symbols in each row and column in the figure. Analyzing the figure, can you find out the value of the symbols?

If 21x = 79x, what is the value of x?

The person who makes it has no need for it; the person who buys it has no use for it. The person who uses it can neither see nor feel it. What is it?

A father's child, a mother's child, yet no one's son.

Who am I?

What have one eye but still cannot see?