Why 1729 is a magic number? Answer Logically.

In 1990, a person is 15 years old. In 1995, that same person is 10 years old. How can this be?

I am the fastest animal but cannot climb the tree. What am I?

If it took eight men ten hours to build a wall, how long would it take four men to build it?

You have an empty wine bottle with a cork that has been secured at the top in a normal way. There is a metal ring inside the bottle that is suspended by a string.

How can you make the metal ring drop to the bottom if you are not allowed to touch anything - not the bottle, not the cork, not the thread and not the ring?

You have two buckets of 11 liters and 6 litres.
How can you measure exactly 8 litres?

How many times in a given day, minutes and hour clock comes in a straight line ?

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?

Which part of London exists in France as well ?

What has 13 hearts but no other organs?