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

With the help clues provided in the image, can you find the 5 digit key?

P is the father of Q and S is the son of R. T is the brother of P and has a daughter U. If R is the sister of P, then what is the relation between U, Q and S?

There are are five things wrong with this sentence; only geniuses will be able to to spot all of the mitstakes

Can you find out the remainder when 3^300 is divided by 5?

In two decks of cards, what is the least amount of cards you must take to be *guaranteed* at least one four-of-a-kind?

I am written with two letters.
I said with the one.
I usually am seen with the two.

Who am I?

Solve below popular number sequence
314 159 265 358 979 323 846 ?

A king sentenced a man to the death sentence for some crime he had committed. Known for his kindness, the king told the culprit that he had a choice to die in a way he decides.

The culprit was clever and said something that saved him from death. What method do you think he must have chosen for his death?

In my garden, I have many trees but only one of them is the mango tree. In these mango trees, there are some mangoes(as expected).

But after a strong wind, there are neither mangoes on the tree nor on the ground. Explain?