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? 2, 4, 8, 32, 256, ?
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.
Sequence raises to power doubling indices: 2¹, 2², 2³, 2⁵, 2⁸, next 2¹¹=2048.
Final Answer: Option C — 2048