Reasoning Ability - Calendar Problems
How many odd days are there in 150 years?
How many odd days are there in 150 years?
medium Q7 of 15
Step-by-Step Solution
Step 1: Split 150 = 100 + 50
100 → 5 odd days; 50 → 6 odd days.Step 2: Add and reduce
5 + 6 = 11 → 11 mod 7 = 4.Final Answer:
4 odd days → Option CQuick Check:
Alternatively counting leaps across 150 years gives same remainder 4 ✅
Quick Trick: Break into 100 + remainder, sum their odd days and reduce mod 7.
Common Mistakes:
MISTAKES- Assuming 150 = 3×50 without considering century pattern.
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