What is 15 of 100?

Here is some information about the number 15:

1. In mathematics, 15 is a composite number, with its factors being 1, 3, 5, and 15.

2. 15 is the seventh triangular number.

3. The binary number for 15 is 1111.

4. In Roman numerals, 15 is represented as XV.

5. 15 is the atomic number of phosphorus on the periodic table.

6. If you flip a coin 15 times, the probability of getting exactly 8 heads is approximately 0.1.

7. Fifteen is the legal age for obtaining a learner's permit to drive in several U.S. states.

8. The 15th wedding anniversary is traditionally celebrated with gifts made of crystal.

9. The number 15 is considered lucky in many Asian cultures.

10. At 15, a teenager is typically in high school and preparing for college or other post-secondary education.

11. In music, a musical group consisting of 15 people is known as a quindecimette.

12. The 15th book of the Christian Bible's New Testament is the Book of Ezra.

13. There are 15 players on a rugby union team.

14. The age 15 is often associated with the transition from childhood to adolescence.

15. The 15 puzzle is a popular sliding puzzle game consisting of 15 numbered tiles that need to be rearranged in order.