Reasoning Ability - Calendar Problems
Which year will have the same calendar as 2015?
Which year will have the same calendar as 2015?
medium Q14 of 15
Step-by-Step Solution
Step 1: Identify 2015 type
2015 is a non-leap year → +1 odd day per ordinary year.Step 2: Consider 11-year candidate → 2026
From 2015 to 2025 (10 years) not enough; try 2015 → 2026 = 11 years. Leap years between 2016–2025: 2016, 2020, 2024 = 3 leaps.Step 3: Compute odd days
Ordinary years = 8 → 8×1 = 8; Leap years = 3 → 3×2 = 6; total odd days = 8 + 6 = 14 → 14 mod 7 = 0.Final Answer:
2026 → Option AQuick Check:
Total odd days ≡ 0 → calendars repeat in 2026 ✅
Quick Trick: For non-leap years, test 6- and 11-year gaps and verify odd days sum = 0 mod 7.
Common Mistakes:
MISTAKES- Assuming the nearest 6-year gap will always work without checking leap years.
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