Solved IB ACIO Question
A solved IB ACIO PYQ — decoded step-by-step.
Solve it the standard way once — then learn the shortcut.
Q · Calendarmedium · 45s
If today is Tuesday, what day was 100 days before?
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.
100 mod 7 = 2. Two days before Tuesday is Sunday.
Final Answer: Option B — Sunday