What is the next number in this series?

4,12,84,3612....

There is something which is always coming but never arrives?

A 3 digit number is such that it's unit digit is equal to the product of the other two digits which are prime. Also, the difference between it's reverse and itself is 396.

What is the sum of the three digits?

What 4-letter word can be written forward, backward or upside down, and can still be read from left to right?

How many bricks does it take to complete a building that is 15 feet wide, 30 feet deep, and 12 feet tall made of brick?

In the given picture, you can find two letters missing. When two particular letters are placed in the missing spots, you get an eight-letter word while reading in the anti-clockwise direction. Can you find out the missing letters and the missing word eventually?

There is a certain crime, that if it is attempted, is punishable, but if it is committed, is not punishable. What is the crime?

Which wheel of car does not rotate when you turn your car right?

There’s a one-story house in which everything is yellow. Yellow walls, yellow doors, yellow furniture. What colour are the stairs?

In the given figure, you can see that four match sticks are used to form a square. Can you form five squares by using six matches?