Difficulty: Easy
Correct Answer: Monday
Explanation:
Introduction / Context:We solve for “today” first, then move backward from “yesterday.”
Given Data / Assumptions:Today + 3 = Tuesday ⇒ Today = Saturday.
Concept / Approach:Yesterday = Friday; four days before that is Monday.
Step-by-Step Solution:
Today = Saturday.Yesterday = Friday.Four days before Friday = Monday.Final Answer:Monday
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