About this video
This video explores a big question in math: are there different sizes of infinity? Mathematicians tried to figure this out and learned some surprising things about numbers.
🧠 Quiz & Trivia
Test your knowledge after watching!
Q1 What is the name for matching up objects from two groups so that none are left over?
Answer: One-to-one mapping
Q2 What kind of numbers can you add together to get a bigger number, no matter how big it gets?
Answer: Natural numbers
Q3 What is the name for all the numbers on a line that go from negative forever to positive forever?
Answer: Real numbers
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