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  1. 4 - Wikipedia

    Approximately four weeks (4 times 7 days) to a lunar month (synodic month = 29.54 days). Thus the number four is universally an integral part of primitive sacred calendars.

  2. Learn About the Number 4 | Number of the Day: 4 | Four with ...

    Created by teachers, learn how to show 4 in a ten frame. Learn to draw 4 tally marks. See the number 4 with objects that sometimes come to life for a fun surprise!

  3. 4 Factorial - getcalc.com

    In the scientific analysis or real world experiments, 4! is used to find the total number of possible results or outcomes in the experiment having 4 objects, numbers, letters, words or symbols.

  4. 8 Fun Facts About the Number 4 - Facts.net

    Oct 19, 2023 · Explore fascinating facts about the number 4. Discover its significance in various cultures, including its symbolism and representations in numerology, astrology, and mythology.

  5. 4 (number) - New World Encyclopedia

    Four is the second square number (a "square number" is an integer that can be written as the square of some other integer) and the second centered triangular number.

  6. 10 Interesting Facts About The Number 4 - The Fact Site

    May 4, 2021 · The number 4 can be linked to numerology, superstition, important dates and so much more. Here are 10 facts about the number 4 that you should know.

  7. About The Number 4 - Numeraly

    Discover the fascinating world of the number 4! Explore its meanings, facts, religious significance, angel number interpretations, and its role in arts and literature.

  8. FOUR Definition & Meaning - Merriam-Webster

    The meaning of FOUR is a number that is one more than three. How to use four in a sentence.

  9. Why Do Some Cultures Believe the Number Four Is Unlucky?

    Sep 20, 2023 · In many East Asian cultures, including China, Korea, Japan and Taiwan, the number four is steeped in superstition. This fear of the number four, or tetraphobia, holds so …

  10. 4 (number) - Simple English Wikipedia, the free encyclopedia

    In mathematics, the number four is an even number and the smallest composite number. Four is also the second square number after one. A small minority of people have four fingers on each …