3
3
3 (three) is a number, numeral, and digit. It is the natural number following 2 and preceding 4.
Mathematics[edit | edit source]
In mathematics, the number 3 is a prime number, a Fermat prime, a Mersenne prime, and a lucky prime. It is the first odd prime number and the second smallest prime number. The number 3 is also the first number that forms a geometric progression (1, 3, 9, 27, ...).
In Roman numerals, 3 is represented as III. In the binary numeral system, it is written as 11. In the decimal system, it is simply 3.
Science[edit | edit source]
In science, the number 3 is significant in various fields:
- In chemistry, the atomic number of lithium is 3.
- In physics, there are three dimensions of space: length, width, and height.
- In biology, the DNA codon consists of three nucleotides.
Religion and Mythology[edit | edit source]
The number 3 holds significant meaning in various religions and mythologies:
- In Christianity, the Holy Trinity consists of the Father, the Son, and the Holy Spirit.
- In Hinduism, the Trimurti represents the three principal deities: Brahma, Vishnu, and Shiva.
- In Greek mythology, there are three Fates and three Graces.
Culture[edit | edit source]
The number 3 is often considered a lucky number in many cultures. It is frequently used in literature, art, and music:
- In literature, the rule of three is a writing principle that suggests that a trio of events or characters is more humorous, satisfying, or effective.
- In art, the rule of thirds is a guideline for composing visual images.
- In music, a triad is a set of three notes that can be stacked vertically in thirds.
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Credits:Most images are courtesy of Wikimedia commons, and templates Wikipedia, licensed under CC BY SA or similar.Contributors: Prab R. Tumpati, MD