Which alphabet letter is a question?

Where do fish keep their money?

Can you find the missing piece of the Porsche?

In an office's desk, you find a unique method that shows the current day of the month. Two numbered cubes are used to depict the current date.

Can you find out the numbers on both the cubes so that each date can be mentioned using them?

Please note that you have to use both the cubes to display any date. Thus the 1st day must be represented by 01 and so on.

Buy me, smell me or deliver me, I do not change.

Who am I?

A thief enters a store and threatens the clerk, forcing her to open the safe. The clerk says, “The code for the safe is different every day, and if you hurt me you’ll never get the code.” But the thief manages to guess the code on his own. How did he do it?

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

Rearrange the letters in "new door" to make one word.

It comprises roots which nobody sees,
Much taller than those trees,
Up and up it goes,
Still it never grows?

A man who was outside in the rain without an umbrella or hat didn’t get a single hair on his head wet. Why?