NECO Mathematics 2007 Objective — Question 6
Question 6 of 60 from the National Examinations Council (NECO) Mathematics 2007 Objective paper, with the correct answer and a full explanation.
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The first term of an Arithmetic Progression is 36 and the fourth term is 6. Find the common difference.
- A. -30
- B. -10Correct
- C. 3
Explanation
T4 = a+3d: 6 = 36+3d, so 3d = -30, giving d = -10.
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