Reasoning Ability - Calendar Problems
If 1st January 1800 was Wednesday, what day was 1st January 2200?
If 1st January 1800 was Wednesday, what day was 1st January 2200?
hard Q10 of 15
Step-by-Step Solution
Step 1: Determine the span
From 1-Jan-1800 to 1-Jan-2200 is exactly 400 years.Step 2: Apply the 400-year cycle rule
In the Gregorian calendar, every 400 years contain exactly 0 odd days (400 years = 1,46,097 days = divisible by 7). Hence, the weekday repeats.Step 3: Apply the result
Since the shift is 0 odd days, the weekday remains the same as 1-Jan-1800 → Wednesday.Final Answer:
Wednesday → Option CQuick Check:
400-year cycle resets weekday alignment completely → Wednesday → Wednesday ✅
Quick Trick: A full 400-year span always repeats the weekday exactly — no odd-day shift.
Common Mistakes:
MISTAKES- Incorrectly adding extra shifts for non-leap centuries — these are already accounted for in the 400-year cycle (net 0 odd days).
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