Reasoning Ability - Calendar Problems
How many odd days are there in 250 years?
How many odd days are there in 250 years?
easy Q3 of 15
Step-by-Step Solution
Step 1: Break 250 years into 200 + 50
200 years = 3 odd days; 50 years = 6 odd days.Step 2: Add and reduce modulo 7
Total odd days = 3 + 6 = 9 → 9 mod 7 = 2.Final Answer:
2 odd days → Option AQuick Check:
200→3, 50→6 → 9 mod 7 = 2 → correct.
Quick Trick: Split 250 into 200 + 50 and reduce modulo 7.
Common Mistakes:
MISTAKES- Not reducing 9 modulo 7.
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