In internet slang, 4 can replace the word for (as four and for are pronounced similarly). For example, messaging 4 u instead of for you when talking to someone. 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. 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. 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. Explore fascinating facts about the number 4. Discover its significance in various cultures, including its symbolism and representations in numerology, astrology, and mythology. We use cookies on your device to help us provide a more reliable service, show you relevant adverts and create more shows you might like. Find out more at channel4.com/cookies and. See the number 4 with objects that sometimes come to life for a fun surprise! This early math video works great as a Number of the Day lesson or as an exciting early math activity for preschool. Discover the fascinating world of the number 4! Explore its meanings, facts, religious significance, angel number interpretations, and its role in arts and literature. FOUR definition: a cardinal number, three plus one. See examples of four used in a sentence. Four is a Buy Now, Pay Later app that lets you split any online purchase into 4 easy payments, made every two weeks. Download the app, get your one-time virtual card, and shop at hundreds of your favorite online retailers — all from one place.