529 accepted96% rate5.5 hours
What is the atomic number of carbon?
Which physicist discovered radium and polonium with her husband?
Which country won the FIFA World Cup in 2018?
In what year was the first iPhone released?
How many minutes are in a day?
Who invented the World Wide Web?
Which organ pumps blood through the human body?
In what year did Pinterest launch?
Which chemical element has the symbol Cu?
What is the capital city of Argentina?
How many sides does a hexagon have?
How many planets are in the Solar System?
What is the atomic number of oxygen?
Which scientist wrote the Principia Mathematica in 1687?
On which continent is the Sahara Desert?
Who co-founded Apple with Steve Wozniak?
How many chromosomes are in a typical human body cell?
Which chemical element has the symbol K?
Which scientist proposed the theory of general relativity?
Which company makes the Xbox consoles?
Which company created the iPhone?
Who founded Microsoft with Paul Allen?
Which chemical element has the symbol Fe?
What is the capital city of Kazakhstan?
What is the capital city of Australia?