Solved IB ACIO Question
A solved IB ACIO PYQ - decoded step-by-step.
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Q · Alphabet Testmedium · 45s
Select the letter which completes the series: Z, X, U, Q, ?
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.
Positions in alphabet:Z=26, X=24, U=21, Q=17
Differences:26−24=2, 24−21=3, 21−17=4
Pattern: Differences increase by 1 each time (+2, +3, +4)
Next difference = 5 → Next letter = Q − 5 = 17 − 5 = 12 → 12th letter = L
Final Answer: Option C - L