What's the only room from which no one can enter or leave

By using all numbers, i.e. 123456789 and subtraction/addition, operators number 100 can be formed in many ways.
Example: 98 + 7 + 6 - 5 - 4 - 3 + 2 - 1 = 100

But if we add a condition use of the number 32 is a must. Then there are limited solutions.
One of such solution is: 9 - 8 + 76 + 54 - 32 + 1 = 100

Can you tell me any other solution?

what does this below rebus represent identXQQQQQME

Katniss and Peeta are liars. They both lie on some specific days.

Katniss lies on Fridays, Saturdays and Sundays. She speaks the truth on all other days.

Peeta lies on Tuesdays, Wednesdays and Thursdays. He speaks the truth on all other days.

Can you tell that one day of the week when both of them will say "Tomorrow, I will lie."?

Double it and multiply it by 4. Then divide it by 8 and you’ll have it once more. What number is it?

What word is identified by the below rebus?

Your Your Your Your Your
Your Your Your Your Your

There is a shop where written:
Buy 1 for $1
10 for $2
100 for $3
I needed 999 and still only paid $3. How could this be financially viable for the shop-keeper?

I am a prime number.
The double of myself is equal to the square of me.

which number am I?

John enters a small room. The Door Closes.
When the door opens, John is in a larger room.

Explain?

Can you find the hidden animal in the picture below?