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?

You have three orange, two pink and five purple balls in the drawer beside your bed. There is no electricity and the room is entirely dark. How many balls must you take out to ensure at least one ball of each colour at least?

In this image, you can see three almost identical Doraemon images. Can you spot the odd one out from them?

What is the difference between a jeweller and a jailer?

Why do you find that most of the buildings are deprived of the 13th floor?

Can you complete the sequence?

192, 021, 222, 324, 252, 627, 2__, 9__?

What is both possible and impossible at the same time?

I am looking for a word that change both gender and number when i add the letter 'S'.

What Word am I Looking For ?

I am sure no one can have two things for dinner. what are they?

A man plots the murder of his wife. His plan is full proof. Nobody saw them leaving their house. He stabbed her with a knife while driving. She died on the spot. He threw her body in a valley. He threw the knife carefully wiping his finger prints on a random garbage bin. Then he went back to his home and no one was watching him this time as well.

After an hour, he was called by the local police department who informed him that his wife was murdered. They asked him to reach the scene of crime immediately. But as soon as he arrived at the crime scene, he was arrested by them.

How did the police know that he himself is the murderer?