Solved IB ACIO Question
A solved IB ACIO PYQ — decoded step-by-step.
Solve it the standard way once — then learn the shortcut.
Q · Series (Numeric and Alphanumeric)medium · 45s
Complete the alphanumeric series: A₁, B₃, D₇, G₁₅, ...?
TopicSeries (Numeric and Alphanumeric)
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.
Letters skip increasing numbers: A(1), B(2), D(4), G(7). Next letter should be K(11). Numbers double plus 1.
Final Answer: Option A — K₃₁