MathematicsProgressionsJAMB
Find the sum of the first 8 terms of the arithmetic progression 3, 7, 11, …
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Answer: C. 136
S₈ = 8/2 × (2 × 3 + 7 × 4) = 4 × 34 = 136.
An AdmitMe practice question, written for the JAMB syllabus. Not an official past question.