Solved IB ACIO Question
A solved IB ACIO PYQ — decoded step-by-step.
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Q · Missing Numbermedium · 45s
Find the missing number:100, 90, 80, 70, ?
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.
Decreasing by 10 each time; next is 60 (option correction: Should be 60).
Final Answer: Option D — 50