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Correct

Explanation

Just one! Then it’s not empty anymore.

Solve this puzzle

What is a blue moon?

A moon that is blue The 2nd full moon The 3rd full moon The 1st full moon

You Should Try This Amusing Calculator Word Game!

A calculator word game is based on the resemblance of numeric digits if looked at upside down and letters. Read the rules to have a lot of fun!

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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