MathematicsProgressionsWAEC
What is the 12th term of the sequence 5, 9, 13, 17, ...?
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Answer: C. 49
The terms rise by 4 each time, so T₁₂ = 5 + 11 × 4 = 49.
An AdmitMe practice question, written for the WAEC syllabus. Not an official past question.