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Title: Natural Numbers (Induction and Associativity)
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Series: Start Learning Numbers
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Parent Series: Start Learning Mathematics
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Chapter: Numbers
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YouTube-Title: Start Learning Numbers 3 | Natural Numbers (Induction and Associativity)
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Bright video: Watch on YouTube
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Dark video: Watch on YouTube
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Original video for YT-Members (bright): Watch on YouTube
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Original video for YT-Members (dark): Watch on YouTube
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Forum: Ask a question in Mattermost
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Quiz: Test your knowledge
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Dark-PDF: Download PDF version of the dark video
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Thumbnail (dark): Download PNG
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Subtitle on GitHub: sln03_sub_eng.srt missing
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Download bright video: Link on Vimeo
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Download dark video: Link on Vimeo
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Timestamps (n/a)
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Subtitle in English (n/a)
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Quiz Content
Q1: The natural numbers have the induction property. Assume have a statement $P(n)$ and you know it’s correct for $P(2)$. Now you found a proof for $P(n+1)$ under the assumption that $P(n)$ is true. What is not a correct conclusion in general?
A1: $P(1)$ is true.
A2: $P(2)$ is true.
A3: $P(3)$ is true.
A4: $P(100)$ is true.
A5: $P(1000)$ is true.
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Last update: 2025-07
