What country can make you shiver?

There’s a one-story house in which everything is yellow. Yellow walls, yellow doors, yellow furniture. What colour are the stairs?

I have lakes with no water, mountains with no stone and cities with no buildings. What am I?

French Police inspects a room where there are no windows, no doors, no tables and is almost empty expect there is just a puddle of water. They found a dead man who obviously hung herself from the ceiling, but they are not able to figure out how this had happened.

John and Jacob entered the crime scene and easily able to solve the case.

How did the man die?

Why is 6 afraid of 7?

Below the four parts have been reorganised. The four partitions are exactly the same in both arrangements. Why is there a hole?

Spot 5 differences in two Christmas tree below:

I am a ten letters word
The first four letters have the power to rule,
Next, four-letter can be eaten.
The next three-letter represents a lady.
I can fly as well

what am I looking for?

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

I never was there, I am always to be.
You have never ever seen me, not ever you will.
Yet I am the confidence of everyone.

Who Am I?