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  1. Mathematics - Wikipedia

  2. Wolfram MathWorld: The Web's Most Extensive Mathematics

  3. Mathematics | Definition, History, & Importance | Britannica

  4. Math | Khan Academy

  5. Learning Mathematics - Math is Fun

  6. Mathematics | About - MDPI

  7. Mathematics - Harvard University

  8. What is Mathematics? - YouTube

  9. Algebra (all content) | Khan Academy

  10. Mathematics and its branches | Britannica