Solved IB ACIO Question
A solved IB ACIO PYQ — decoded step-by-step.
Solve it the standard way once — then learn the shortcut.
Q · Analogymedium · 45s
123 : 13 :: 235 : ?
TopicAnalogy
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.
The relationship is that the sum of the digits subtracted by 1 equals the related number.
Final Answer: Option B — 19