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WAEC Further Mathematics 2024 Question 7

Question 7

Sequences and Series

If the nth term of a linear sequence (A.P) is (5n − 2), find the sum of the first 12 terms of the sequence.

  1. A.120
  2. B.183
  3. C.366
  4. D.732
Show the answer and explanation

Answer: C (366)

Explanation

First term 3, twelfth term 58. S₁₂ = 12/2 × (3 + 58) = 366.