Difficulty: Easy
Correct Answer: Monday
Explanation:
Introduction / Context:Weekdays one year apart shift by +1 day for a common year and +2 days if the year in between is a leap year (because it has an extra day). To move backward, subtract the corresponding shift.
Given Data / Assumptions:
Concept / Approach:If 1984→1985 shifts weekdays forward by +2, then going from 1985 back to 1984 subtracts 2 weekdays: Wednesday − 2 = Monday.
Step-by-Step Solution:
Wednesday − 1 = Tuesday; Tuesday − 1 = Monday ⇒ answer = MondayVerification / Alternative check:Counting forward: Monday (1984) + 366 days = Monday + 2 = Wednesday (1985), consistent.
Why Other Options Are Wrong:Tuesday or Wednesday would reflect +1 or +0 shift, not +2. Thursday is +3, which does not apply here.
Common Pitfalls:Forgetting that the extra Feb 29 in 1984 adds one extra weekday step over the year interval.
Final Answer:Monday.
Discussion & Comments