Solved IB ACIO Question
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Q · Calendarmedium · 45s
On which day of the week will September 30, 2025, fall if January 1, 2025, is a Wednesday?
TopicCalendar
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.
Days from Jan 1 to Sept 30=273; 273 mod 7=0; same day Wednesday.
Final Answer: Option C — Wednesday