Which of the following years will have the same calendar as 2016 ?
2044
A calendar repeats when the new year starts on the same weekday and is of the same type (leap or ordinary). 2016 is a leap year beginning on a Friday.
Odd days: an ordinary year gives 1 odd day and a leap year gives 2. From 2016 the total odd days must be a multiple of 7, and the target year must also be a leap year.
From 2016 to 2043 there are 28 years containing 7 leap years: \(21 \times 1 + 7 \times 2 = 35\) odd days, and \(35 \div 7 = 5\) remainder 0. So 2044 starts on a Friday and is a leap year.
Check: for 2028, years 2016 to 2027 give \(9 + 3 \times 2 = 15\) odd days, remainder 1, so 2028 starts on a Saturday and does not match; 2032 and 2052 also give non-zero remainders.
Hence, 2044.
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