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?

What number do you get when you multiply all of the numbers on a telephone's number pad?

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

What always comes into a house through the keyhole?

The below mentioned letters have been placed in a order using a logic.

DEAD, BALL, FEAR, SHOP

Can you find the logic?

The more of this there is, the less you see. What is it?

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

Be active and find the killer in the picture Riddle below.

If you say my name, I will no longer exist. What am I?

What three numbers, none of which is zero, give the same result whether they’re added or multiplied?