WAEC Mathematics 2022 Question 8

Question 8

Progressions

Find the 17th term of the Arithmetic Progression (A.P.): −6, −1, 4, ….

  1. A.−91
  2. B.−86
  3. C.74
  4. D.79
Show the answer and explanation

Answer: C (74)

Explanation

a = −6 and d = 5. T17 = a + 16d = −6 + 80 = 74.