Final answer:
To determine if a year is a leap year, check if it is divisible by 4 and 400 (if it is a century year).
Step-by-step explanation:
To determine whether a year is a leap year or not, you need to consider two requirements:
- The year must be divisible by 4.
- If the year is a century year (e.g., 1700, 1800), it must also be evenly divisible by 400.If both requirements are met, then the year is a leap year. Otherwise, it is not. For example, the year 1600 is a leap year because it is divisible by 4 and 400. However, the year 1700 is not a leap year because although it is divisible by 4, it is not divisible by 400.