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?

P is the father of Q and S is the son of R. T is the brother of P and has a daughter U. If R is the sister of P, then what is the relation between U, Q and S?

Until it is measured, not known. Yet how you miss it when it has gone. What is it?

People make me, save me, change me, raise me. What am I?

If one and a half boys, eat one and a half burgers in one and a half hours.

How many burgers can 9 boys eat in 3 hours?

Speaking of rivers, a man calls his dog from the opposite side of the river. The dog crosses the river without getting wet, and without using a bridge or boat. How?

I have cities, but no houses. I have mountains, but no trees. I have water, but no fish. What am I?

Can you make a six-letter word using the letters N, A and B ?

I speak without a mouth, and hear without ears. I have no-body, but I come alive with the wind. What am I?

How many cubic feet of dirt are in a hole of one foot deep, three feet long, and two feet wide?