In which direction should the missing arrow point?

A man desired to get into his work building, however he had forgotten his code.
However, he did recollect five pieces of information
* Fifth number + Third number = 14
* The fourth number is one more than the second number.
* The first number is one less than twice the second number.
* The second number and the third number equals 10.
* The sum of all five numbers is 30.

What is the code ?

What is black when you buy it, red when you use it, and gray when you throw it away?

How is the moon similar to a dollar?

Spelt forwards I’m what you do every day, spelled backwards I’m something you hate. What am I?

You are presented with three boxes. One of them has a red ball inside and the other two have a black ball inside each of them. You are asked to pick up the one with red ball and you pick one. Now, one of the other boxes is opened and it is found to have a black ball.

You are presented with a chance to change your box with the one that is left closed. Will you change your box? Why or why not?

You see a boat filled with people, yet there isn’t a single person on board. How is that possible?

If 1+9+8=1, what is 2+8+9?

What does an Island and the letter T have in common?

Which country gets ill every time?