Three doctors said that Bill was their brother. Bill says he has no brothers. How many brothers does Bill actually have?

What 4-letter word can be written forward, backward or upside down, and can still be read from left to right?

A mother bought three dress for her triplets daughters(one for each) and put the dresses in the dark. One by one the girls come and pick a dress.
What is the probability that no girl will choose her own dress?

How many times can you subtract the number 5 from 25?

You are stuck on an island where you have nothing. You find four pieces of paper somewhere on the island. What will be your strategy to escape from the island safely?

PS: No other resource is available to you on the island, neither can you build anything.

All of Jacob's shoes are red except two.
All of Jacob's shoes are green except two.
All of Jacob's shoes are yellow except two.

How many shoes does Jacob have?

What is the coolest letter in the alphabet?

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

There are are five things wrong with this sentence; only geniuses will be able to to spot all of the mitstakes

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?