An American nightclub called 'The Coconut Grove' had a terrible fire in which over 400 people died. A simple design flaw in the building led to a high death toll. Subsequently, regulations were changed to ensure that all public buildings throughout the country eliminated this one detail, which proved deadly. What was it?

Can you find a number that lies one third of the distance between 1/3 and 2/3?

How will you measure 15 minutes using two hourglasses of 7 minutes and 11 minutes respectively?

We have shown you a regular water barrel as below. Without using any measuring device can you check if the barrel is more than half-filled or less than half-filled?

The first two letters signify a male, the first three letters signify a female, the first four letters signify a great, while the entire world signifies a great woman. What is the word?

It is raining today at 11:59 am. What is the probability of sunny weather after 72 hours?

Can you solve below mathematical equation?

2^1234 - 2^1233

Christina, Allison and Lena are 3 daughters of John a well-known Mathematician, When I asked John the age of their daughters. He replied "The current age of her daughters is prime. Also, the difference between their ages is also prime."

How old are the daughters?

A bomb exploded in a room full of married couples and no one died. How?

What is harder to catch the faster you run?