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?

Find the next number in the following series:
6, 14, 26, 98, __?

There are a number of books on a shelf. If one book is the 4th from the left and 6th from the right, how many books are on the shelf?

What word is identified by the below rebus?

Your Your Your Your Your
Your Your Your Your Your

Who has married many women but was never married?

Can you replace the X (both small and big x) with the numbers between 1 to 19 such that all the rows of 3 numbers between X (big x) sum to 23?

Quickly Solve this riddle

7 - 4 + 3 * 0 + 1 = ?

This is a classy optical illusion puzzle. What more you can find except bricks in the image below?

what's the probability of getting a king or a queen from a pack of 52 cards?

Below the four parts have been reorganised. The four partitions are exactly the same in both arrangements. Why is there a hole?