Living above a star, I do not burn
Eleven friends and they do not turn
I can just be visited in a sequence, not once or repeatedly
PQRS are my initials
Can you tell my name accurately?

John was running from 40 thieves. John has got 3 gold boxes which weigh as 4kg, 2kg, and 1kg respectively. A witty man asked John to stay with him for seven days in exchange for 1kg gold per day. John needs to stay there for seven days and also do not want to give the witty man any advance. How can John pay for his seven days stay?

I have four wings but can't fly.
I express no emotions.
I am found on the exact spot every time you look.
I keep toiling away with a little sound.

Do you know what am I?

What country can make you shiver?

They do not possess flesh or feathers or scales or bone
But still, they are blessed with fingers and thumbs of their own.

What building has the most stories?

Can you solve the below algebraic mathematical equation?

(J+O+I+N+T)3 = JOINT

Which is heavier: a ton of bricks or a ton of feathers?

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

No matter how little or how much you use me, you change me every month. What am I?