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Math · Foundational
Logic & Proof
Mathematics runs on airtight reasoning. Learn the logic of "and", "or", "not" and "if–then", solve classic knights-and-knaves puzzles, draw logic with Venn diagrams, spot invalid arguments, and master three powerful proof techniques: contradiction, induction and the pigeonhole principle.
8 lessons~40 min0/8 complete
1
Logic
The rules of reasoning.
2
Proof
Three powerful techniques.