If it was a Friday on 1 January 2016, what was the day of the week on 1 January 2017?
Answer & explanation
Correct answer: option 4
The correct answer is Option (4) → Sunday
The weekday moves forward only by the odd days, the days left over after whole weeks. An ordinary year has 365 days = 52 weeks + 1 day; a leap year has 366 days = 52 weeks + 2 days.
From 1 January 2016 to 1 January 2017 is the whole year 2016
2016 is a leap year (divisible by 4), and its 29 February falls in this period, so there are 2 odd days
Friday + 2 days = Sunday
Tip: A leap year adds 2 odd days only if 29 February lies inside the period. From 1 March 2016 to 1 March 2017 there are 365 days, so only 1 odd day.