Solved IB ACIO Question
A solved IB ACIO PYQ — decoded step-by-step.
Solve it the standard way once — then learn the shortcut.
Q · Alphabet Testmedium · 45s
In the series: Y, W, U, S, ?, O, which letter should replace the question mark?
TopicAlphabet Test
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 move backward by 2 positions each time (Y to W, W to U, etc.). After S (19), moving back 2 positions is Q (17).
Final Answer: Option B — Q