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UI Post-UTME Mathematics 2018 (Model questions) Question 34

Question 34

Progressions

The first term of an Arithmetic Progression (AP) is −7 and the ratio of the 8th term to the 3rd term is 7:1. Calculate the common difference of the A.P

  1. A.6
  2. B.5
  3. C.4
  4. D.3
Show the answer and explanation

Answer: A (6)

Explanation

−7 + 7d = 7(−7 + 2d) gives −7d = −42, so d = 6.