Reasoning Ability - Calendar Problems
If 15th July is Monday, what day will 15th September be (same year, not leap)?
If 15th July is Monday, what day will 15th September be (same year, not leap)?
medium Q13 of 15
Step-by-Step Solution
Step 1: Sum odd days for intervening months
July → Aug → July has 31 ≡ 3, August has 31 ≡ 3. Total shift = 3 + 3 = 6 odd days.Step 2: Apply shift to base weekday
Base day = Monday. Monday + 6 days = Sunday.Final Answer:
Sunday → Option CQuick Check:
Two 31-day months produce +6 shift → Monday → Sunday ✅
Quick Trick: Add odd days of each intervening month (31→3, 30→2) then reduce mod 7.
Common Mistakes:
MISTAKES- Forgetting to include all intervening months (both July and August here).
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