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  1. 4 - Wikipedia

  2. Four Definition & Meaning - Merriam-Webster

  3. 4 (number) - New World Encyclopedia

  4. The number four | number | Britannica

  5. four - Definition, pictures, pronunciation and usage notes | Oxford ...

  6. FOUR | English meaning - Cambridge Dictionary

  7. Four - Definition, Meaning & Synonyms | Vocabulary.com

  8. FOUR definition and meaning | Collins English Dictionary

  9. 4th grade | Math | Khan Academy

  10. Four Definition & Meaning | Britannica Dictionary