What is the riddle which can be asked all day with a different correct answer each time.

Can you think of any three-dimensional shape that comprises of exactly two surfaces?

Your mother’s brother’s only brother-in-law is asleep on your couch. Who is asleep on your couch?

You are playing a game with your friend Jack. There are digits from 1 to 9. You both will take turn erasing one digit and adding it to your score. The first one to score 15 points will win the game.

Would you want to play first or second?

PS: The sum should be exactly 15.

A Shopkeeper collects 71 rupees in the form of 20 paisa and 25 paisa.
He collects a total of 324 coins.

Can you tell me how many number of 20-paisa and 25-paisa he got?

A seven-year-old kid challenged his classmates that he can make the number one disappear by adding something to it.

How can he do that?

Can anyone tell me a word in the English dictionary which has a silent 'z'?

There are three boxes. One is labeled "APPLES" another is labeled "ORANGES". The last one is labeled "APPLES AND ORANGES". You know that each is labeled incorrectly. You may ask me to pick one fruit from one box which you choose.

How can you label the boxes correctly?

I am the beginning of the end, and the end of time and space. I am essential to creation, and I surround every place. What am I?

Can you find the odd number in the following?

2716, 4135, 5321 and 7145