MathematicsProgressionsWAEC
Find the sum of the first 12 terms of the arithmetic progression 2, 6, 10, ...
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Answer: C. 288
S = 12/2 × (2 × 2 + 11 × 4) = 6 × 48 = 288.
An AdmitMe practice question, written for the WAEC syllabus. Not an official past question.