Difficulty: Medium
Correct Answer: Tuesday
Explanation:
Introduction / Context:
We are given a reference weekday (Aug 15, 1999 = Sunday) and need to find the weekday for a later September date (6 days before Oct 4). By counting the total days forward and reducing modulo 7, we can determine the resulting weekday step from Sunday.
Given Data / Assumptions:
Concept / Approach:
Compute the number of days from Aug 15 to Sep 28: days remaining in Aug plus days up to Sep 28; reduce modulo 7 and step the weekday forward from Sunday.
Step-by-Step Solution:
Verification / Alternative check:
Breaking 44 as 35 + 9 ⇒ +0 + 2 = +2; consistent.
Why Other Options Are Wrong:
Wednesday/Monday/Sunday correspond to +3/+1/+0 steps, not +2.
Common Pitfalls:
Mistakes in counting the days in each month; always reduce modulo 7.
Final Answer:
Tuesday
Discussion & Comments