Solved IB ACIO Question
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Q · Classification / Odd One Outmedium · 45s
On which day of the week will September 30, 2025, fall if January 1, 2025, is a Wednesday?
TopicClassification / Odd One Out
Question Typemultiple choice
Difficultymedium
Marking+1 / −0.25
Test Duration30 min
Step-by-Step Solution
The complete worked solution.
Every step explained - no skipped algebra.
September 30, 2025, will fall on a Tuesday if January 1, 2025, is a Wednesday.
Explanation:
The number of days between January 1 and September 30, 2025, is used to calculate the day offset.
Applying modular arithmetic, the day falls on Tuesday.
Final Answer: Option A - Tuesday