How can a man go eight days without sleep?

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

A cat had three kittens: Snophy, Topsy and Jorden. What was the mother's name?

What begins with T, ends with T, and has T in it?

What is the centre of gravity?

How can I get the answer 24 by only using the numbers 8,8,3,3?

You can use the main signs add, subtract multiply and divide.

In which direction should the missing arrow point?

Give it food and it will live; give it water and it will die.

In a classic wine shop, the list of three most popular wines are:
- The cost of 1 French wine bottle: 500$
- The cost of 1 German wine bottle: 100$
- The cost of 20 Dutch wine bottles: 100$

John entered the wine shop and he needs to buy
- All three types of wine bottles.
- Needs to buy Dutch wine bottles in multiples of 20.
- Need to buy 100 wine bottles in total.

John has only 10000$. How many wine bottles of each type, John must buy?

What does the following represent?

N N N N N N N

A A A A A A A

C C C C C C C