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

In one of the popular batman series movie "Batman Forever", there was a riddle that goes like "Tear me off and then scratch my head and I was red then and now I am back. Who am I?

Whats the next number in the below number sequence pattern.

Can you solve the below tricky visual equation?

Two batsman each on 94 runs. Seven runs needed to win in last 3 balls. Both make 100*. How?

Give it food and it will live; give it water and it will die.

A girl says this to her best friend: “I was born in 1955, and I celebrated my 17th birthday last weekend.” Her best friend thinks she’s lying, but she’s actually correct. How is that possible?

How can you drop a raw egg from a height onto a concrete floor without cracking it?

A train leaves from point A for point B at 80 mph. After half an hour, another train leaves from point B for point A at 60 mph.

Which of the trains will be farther from point A when they meet ?

A brand new Mobile Phone was on sale at 20% as a promotional offer. By what per cent must the Mobile price be increased to sell it at the original price again?