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

A man embarked on a questionnaire game. He kept asking the same question to whomever he found. The answer each time was different.

Can you guess what the question was?

In a secret society, a buried chamber can be accessed only via a secret password. The password is seven characters long and comprises of just letters and numbers.

You find a code that can help you in cracking the password. The code says "You force heaven to be empty".

Can you deduce the password from that?

Solve the equation in the image by looking at the pattern closely.

Which is the smallest number that you can write using all the vowels exactly once?

Solve the following series:
AZ, GT, MN, __, YB

I am white when I am dirty, and black when I am clean. What am I?

Can you solve the tricky chess rebus puzzle below by ciphering the hidden meaning?

There are five vowels (a, e, i, o, u) in the English language.
Can you tell us a word that contains all these vowels?

Rebus Puzzle Definition: A rebus is an illusion device that uses pictures to represent words or parts of words.
What does This Rebus Puzzle Identify?