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

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

What is the fewest number of coins that would be required in order to make sure each and every coin touches exactly three other coins?

John was driving a bus and got stuck when passing through an underpass. Then came Jacob with a needle and got the bus out of the underpass.

What did the boy do?

How can a man go eight days without sleep?

O_er_t_o_

Complete the missing letters of the given word.

A generous owner of a company decided to give a bonus of $45 to every man and $60 to every woman on his birthday. But only one-ninth of the men and one-twelfth of the women were present to take the bonus.

Can you calculate the amount of money the owner spent if there were 3552 employees?

What is the next number in this matchsticks series riddle?

Can you find the 09 errors in the picture below?

In which direction should the missing arrow point?