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15 Challenging Questions

Question 1 of 15

Which planet has the most moons?

Question 2 of 15

Who wrote the dystopian novel "Brave New World"?

Question 3 of 15

In what year was the euro introduced as physical currency?

Question 4 of 15

What is the SI unit of electric current?

Question 5 of 15

Which chess piece can move only diagonally?

Question 6 of 15

Which U.S. president served the shortest term?

Question 7 of 15

What is the most spoken language in the world by native speakers?

Question 8 of 15

Which country invented paper money?

Question 9 of 15

Which organ is responsible for filtering blood in the human body?

Question 10 of 15

What is the name of the galaxy we live in?

Question 11 of 15

Which country has the oldest continuously used national flag?

Question 12 of 15

How many squares are there on a standard chessboard?

Question 13 of 15

Who was the first woman to win a Nobel Prize?

Question 14 of 15

Which ancient civilization built Machu Picchu?

Question 15 of 15

What is the main gas found in the air we breathe?