A girl is twice as old as her brother and half as old as her father. In 50 years, her brother will be half as old as his father. How old is the daughter now?

What is the word or phrase?

On a certain day, John celebrated his birthday. Two days later, his older twin brother Jacob celebrated his birthday.

Is this even possible? How can it be?

What have one eye but still cannot see?

John said, "If yesterday was tomorrow, today would be Friday."

When did John make this statement?

What is the fastest way to double your money?

Find The Next Number In The Sequence

30 10 15 13 0 16 -15 ?

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 always comes into a house through the keyhole?

Using eight eights and addition only, can you make 1000?