Compare 21 and 18 – Number Comparison Tool
1. Which Number is Greater?
21 is greater than 18.
2. Difference Between 21 and 18
The absolute difference between the two numbers is 3.
The percentage difference relative to the larger number is approximately 14.29%.
3. Ratio of 21 to 18
The ratio of 21 to 18 is 1.17.
4. Even or Odd Status
21 is Odd.
18 is Even.
5. Prime Number Check
21 is Not prime.
18 is Not prime.
6. Multiples and Factors
Neither number is a multiple of the other.
7. When Is Number Comparison Useful?
Comparing numbers is essential in many real-world applications, such as:
- Financial calculations (e.g., comparing prices or expenses)
- Data analysis and statistics
- Programming and algorithm design
- Everyday decisions involving measurements or quantities