Reasoning Ability - Calendar Problems
If 1st March 2020 is Sunday (2020 is a leap year), what day was 1st February 2020?
If 1st March 2020 is Sunday (2020 is a leap year), what day was 1st February 2020?
medium Q14 of 15
Step-by-Step Solution
Step 1: Identify February odd days in a leap year
February in leap year has 29 days → 29 ≡ 1 (mod 7).Step 2: Move backward from 1 Mar to 1 Feb
Backward shift = −(odd days of Feb) = −1. Base day = Sunday → Sunday − 1 = Saturday.Final Answer:
Saturday → Option AQuick Check:
Crossing back over Feb(29) subtracts 1 day → Sunday → Saturday ✅
Quick Trick: When moving backward across February in a leap year subtract 1 (Feb ≡ 1).
Common Mistakes:
MISTAKES- Treating leap-Feb as 0 (non-leap) when moving across it.
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