Leap Year Check

Leap Year Check problems ask whether a given year is a leap year. A leap year has 366 days, with February having 29 days. These problems test your knowledge of the Gregorian calendar rules for leap years.

10Worksheets
200+Practice Questions
BeginnerDifficulty
30-45 minutesHours to Master

Introduction to Leap Year Check

Leap Year Check problems ask whether a given year is a leap year. A leap year has 366 days, with February having 29 days. These problems test your knowledge of the Gregorian calendar rules for leap years.

Prerequisites

Divisibility rules for 4, 100, and 400 Understanding of Gregorian calendar Basic arithmetic
Why This Matters: Leap Year Check problems are fundamental to calendar reasoning. You can expect 1-2 questions in SSC CGL, Banking PO, and Railways exams.

How to Solve Leap Year Check Problems

1

Step 1: Check if the year is divisible by 4

2

Step 2: If not divisible by 4 → NOT a leap year

3

Step 3: If divisible by 4, check if divisible by 100

4

Step 4: If not divisible by 100 → IS a leap year

5

Step 5: If divisible by 100, check if divisible by 400

6

Step 6: If divisible by 400 → IS a leap year

7

Step 7: If divisible by 100 but not by 400 → NOT a leap year

Pro Strategy: Apply the rules in sequence: divisible by 4 → then check 100 → then check 400. The year must satisfy all conditions in order.

Example Problem

Example 1: Is 2024 a leap year? Solution: Step 1: 2024 ÷ 4 = 506 (divisible by 4) Step 2: 2024 ÷ 100 = 20.24 (not divisible by 100) Step 3: Therefore, 2024 IS a leap year Answer: Yes Example 2: Is 1900 a leap year? Solution: 1900 ÷ 4 = 475 (divisible by 4), 1900 ÷ 100 = 19 (divisible by 100), 1900 ÷ 400 = 4.75 (not divisible by 400) → NOT a leap year Answer: No Example 3: Is 2000 a leap year? Solution: 2000 ÷ 4 = 500, ÷100 = 20, ÷400 = 5 (divisible by 400) → IS a leap year Answer: Yes

Pro Tips & Tricks

  • Century years (ending with 00) are leap years only if divisible by 400
  • All years divisible by 4 are leap years EXCEPT century years not divisible by 400
  • Quick check: Last two digits divisible by 4 → potential leap year (except centuries)
  • 1900, 2100, 2200, 2300 are NOT leap years
  • 2000, 2400, 2800 ARE leap years
  • Leap year occurs every 4 years on average (but not exactly)

Shortcut Methods to Solve Faster

If year % 4 != 0 → not leap
If year % 100 == 0 and year % 400 != 0 → not leap
Otherwise → leap
Check last two digits: if divisible by 4 and not a century → leap

Common Mistakes to Avoid

Thinking all years divisible by 4 are leap years (forgetting century rule)
Assuming century years are never leap years (2000 is a counterexample)
Forgetting that 400 is the correct divisor for centuries
Misapplying the order of checks

Exam Importance

Leap Year Check is an important topic for various competitive exams. Here's how frequently it appears:

SSC CGL
1-2 questions
BANKING PO
1-2 questions
RAILWAYS RRB
1-2 questions
CAT
0-1 questions
INSURANCE
1-2 questions

Ready to Master Leap Year Check?

Start with Worksheet 1 and work your way up to expert level! Each worksheet includes:

20 practice questions
Detailed solutions
Step-by-step explanations
Start Practicing Now