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WAEC Mathematics 2026 Question 12

Question 12

Progressions

Given that Sn = 2n2 − 3n, find S6

  1. A.54
  2. B.10
  3. C.18
  4. D.4
Show the answer and explanation

Answer: A (54)

Explanation

S6 = 2(36) − 18 = 54.