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

Can you name four days which start with the letter 'T'?

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?

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

In a rainy season, one day 3 huge ladies walked under a normal-sized umbrella.
The umbrella is not huge enough to accommodate all 3 ladies yet not a single lady got wet. Why?

Can you decipher the below rebus?

PBLUESAISNUERSES

I know there are two methods by using three time the same number with a plus(+) operator , you can make sum as 60.

One of them is 20+20+20.

whats the other way ?

Can you find out the missing number?

? 4 5 3 5

9 5 7 10 3

Thirty friends were on a hiking trip when they decided to enjoy the bonfire. They assembled for it and agreed to play a game. For that, they divided themselves into five teams with seven members each, forming five rows.

How did they manage to achieve this formation?

My friends called me Iron59 because my parents are a chemist and a mathematician. What is my real name?