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Correct

Explanation

All of them died, but nine. So nine are alive.

Solve this puzzle

Which instrument is used for inscribing circles?

Compass Circler Jar Liner

Is the Birthday Problem Really a Problem?

Imagine that there are 23 persons filling in their job application forms. What are the chances of two people having something in common? In fact, there is a 50 percent probability that two of them share the same birthday!

MathAndMind is an online math game where you get an opportunity to solve 10 math tasks every day. Every correct
answer earns you 1 point. Your goal is to score as many points as
possible and become a Math champion!
Remember, though: you can’t use a calculator while playing! We’re waiting for your visit!

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