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?

I know a nine-letter word having only one vowel.
Do you ?

4 fathers, 2 grand-fathers and 4 sons went to watch the movie.What is the minimum number of tickets they need to buy ?

I have teeth but i don't bite. Who Am I ?

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

An infinite number of mathematicians are standing behind a bar. The first asks the barman for half a pint of beer, the second for a quarter pint, the third an eighth, and so on. How many pints of beer will the barman need to fulfill all mathematicians' wishes?

You need to pick one entry from pot A and one from pot B to have a perfect match. Can you do it?

I am weightless, but you can see me. Put me in a bucket, and I'll make it lighter. What am I?

Our product and our sum always give the same answer. Who are we?

A man is found dead with a knife in his back When the investigation is done. A chair lays beside him and the forensic team finds moisture around the body.

If he committed suicide, how did he do it?