What is the centre of gravity?

Why did Navjot Singh Sidhu put the new January calendar in the freezer

I get hot but I never sweat,
I cook food but I am not a chef,
I have a door but you can't enter me,
I have a light but I am not a lamp.
Who am I?

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?

A deaf and mute man goes to the train station. Tickets for the train are 50 cents each. The man goes to the ticket booth and hands the man inside just a dollar. The man in the booth hands him two tickets.

How did the man in the booth know to give him two tickets without even looking at him?

What breaks yet never falls, and what falls yet never breaks?

Can you find the next number in the below sequence
3 , 7 , 10 , 11 , 12 , 17 ?

What does Alexander the Great and Winnie the Pooh have in common?

Aman has 1.15 rupees in his pocket. There are a total of 6 coins in his pocket.

When his friend asked him for a change, he could not give change for a rupee and five paisa.

Can you tell which coins he has?

Find out the missing number in the picture attached: