Solved IB ACIO Question
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Q · Series (Numeric and Alphanumeric)medium · 45s
What is the next number in the series: 2, 6, 12, 20, 30, ...?
TopicSeries (Numeric and Alphanumeric)
Question Typemultiple choice
Difficultymedium
Marking+1 / −0.25
Test Duration30 min
Q 1 / 33Next question →
Step-by-Step Solution
The complete worked solution.
Every step explained - no skipped algebra.
The differences between the numbers are increasing by 2 each time: 6-2=4, 12-6=6, 20-12=8, 30-20=10. The next difference should be 12. So, 30 + 12 = 42.
Final Answer: Option C - 42