A man dies of old age on his 25 birthday. How is this possible?

There is a barrel with no lid and some wine in it. 'This barrel of wine is more than half full,' said Curly. 'No it's not,' says Mo. 'It's less than half full.' Without any measuring implements and without removing any wine from the barrel, how can they easily determine who is correct?

Below the four parts have been reorganised. The four partitions are exactly the same in both arrangements. Why is there a hole?

Who always enjoys poor health?

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

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 four weights can be used to balance from 1 to 30 pounds?

There is one thing that goes round the house and also inside the house but never even share a brief touch. What is it?

Can you arrange four 9's and use at most 2 math symbols, to make the total 100?

What is full of holes but still holds water?