Interesting Facts About the Number 21

Have you ever counted the dots on a 6-sided die? Well, there are 21 dots in total!

Numbers have played a significant role in human history, and different cultures have attributed various meanings and superstitions to them.

Here are some fascinating facts about the number 21:

When you turn 21 in the US, you can legally purchase and consume alcohol. However, you have to wait until you’re 21, even though you can vote and go to war at 18.

In California, Hawaii, and New Jersey, you can’t buy tobacco products until you’re 21.

21 is the age of majority in many countries, including the USA, UAE, Bahrain, and Singapore. This means that at 21, you have complete legal control over your decisions and actions.

If you live in the UK, you can accompany a driver who has a learner’s driving license at 21 if you’ve had a full driving license for at least three years.

Adele released her second album titled “21” to coincide with her age in 2011.

In the US, you can only purchase more than one ticket to an R-rated movie once you’re 21.

21 is written as XXI in Roman numerals.

Before 2011, 21 was the point total needed to win a game of table tennis and badminton.

The 21st amendment to the US constitution ended the prohibition of alcohol, which was originally put in place by the 18th amendment.

Green Day released a song called “21 Guns” in 2009, which addressed patriotism.

According to physician Duncan MacDougal, the soul weighs 21 grams.

The flag of Kurdistan features a sun with 21 golden rays emanating from it.

Scandium, a rare-earth element, has an atomic number of 21.

21 is the 8th number in the Fibonacci sequence.

During World War I, the Japanese Empire sent a list of 21 demands to the Chinese government, which were opposed by the UK and the US.

The guinea, a currency used by Great Britain from 1663 to 1816, was equal to 21 shillings before being replaced by the pound.

In Tarot, the number 21 is associated with The World card, which signifies having the world at one’s feet.

The Bible records 21 acts of rebellion by the Israelites against Egyptian control.

21 is the name of an ancient card game, with the modern version being Blackjack, played in casinos worldwide.

Heads of state, such as royalty in the UK and the President of the USA, are honored with a 21-gun salute tradition dating back to the era of shooting cannonballs in navies.

The number 21 can be found in various aspects of our lives, from nature to government legislation to metaphysics.

Whether it holds greater meaning or is merely a coincidence is up to interpretation.


1. What is the significance of the number 21?

The number 21 is significant in many cultures and traditions. In the United States, it represents the legal age for drinking alcohol. In some religions, it is a sacred number associated with spiritual awakening and enlightenment.

2. What is the mathematical significance of 21?

21 is a composite number, meaning it can be divided by other numbers besides 1 and itself. It is also the product of 3 and 7, two prime numbers. Additionally, it is the sixth triangular number and the sum of the first six natural numbers.

3. How is 21 used in sports?

In blackjack, 21 is the highest possible hand score. In basketball, there are 21 points on the court that can be scored from. In soccer, there are 21 players on the field during a game.

4. What are 21 gun salutes?

A 21 gun salute is a traditional military honor that involves firing 21 guns or cannons in a row. It is often used to honor heads of state, military officials, and other important figures.

5. What is the significance of turning 21?

In many cultures, turning 21 represents a coming of age and a transition to adulthood. It is also the legal drinking age in many countries, including the United States, and is often celebrated as such.

6. How is 21 used in literature and media?

21 is often used as a symbol of luck and success in literature and media. For example, the novel “Catch-22” features a character who believes that 21 is the perfect number, while the film “21” is based on a true story about a group of students who use card counting to win at blackjack.

7. What are some interesting facts about the number 21?

21 is the atomic number of scandium, a rare earth metal. It is also the number of spots on a standard die. In numerology, 21 is associated with creativity and self-expression. Additionally, the 21st century began on January 1, 2001, not 2000.

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