If it is Friday on January 1, 1998, then January 1, 2000 would have been:
Answer & explanation
Correct answer: option 4
The correct answer is Option (4) → Sunday
The weekday repeats every 7 days, so only the odd days left over after whole weeks move it forward. An ordinary year of 365 days is 52 weeks + 1 day, so the same date one year later falls one weekday later.
1998 is an ordinary year (1 odd day): 1 January 1999 is Friday + 1 = Saturday
1999 is an ordinary year (1 odd day): 1 January 2000 is Saturday + 1 = Sunday
2000 is a leap year, but its extra day, 29 February, comes after 1 January, so it does not count here