Difficulty: Medium
Correct Answer: 2018
Explanation:
Concept
Step 1: Accumulate weekday shifts from 2007 onward
Shift from a non-leap year to next Jan 1 = +1 day; from a leap year = +2 days.2007(+1), 2008(+2), 2009(+1), 2010(+1), 2011(+1), 2012(+2), 2013(+1), 2014(+1), 2015(+1), 2016(+2), 2017(+1)Total shift 2007→2018 = 1+2+1+1+1+2+1+1+1+2+1 = 14 ≡ 0 (mod 7)
Step 2: Check leap status
2007 non-leap; 2018 non-leap ⇒ leap status matches.
Conclusion
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