Solved IB ACIO Question
A solved IB ACIO PYQ - decoded step-by-step.
Solve it the standard way once - then learn the shortcut.
Q · Missing Numbermedium · 45s
What number replaces the question mark?3, 6, 9, 12, 15, ?
TopicMissing Number
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.
Increments +3; next number 15 + 3 = 18.
Final Answer: Option C - 18