JAMB Mathematics 2018 Objective — Question 26
Question 26 of 39 from the Joint Admissions and Matriculation Board (JAMB) Mathematics 2018 Objective paper, with the correct answer and a full explanation.
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The 4th term of an A.P is 13 while the 10th term is 31. Find the 24th term
- A. 89
- B. 75
- C. 73Correct
- D. 69
Explanation
d = (31−13)/(10−4) = 18/6 = 3. a = T4−3d = 13−9 = 4. T24 = a+23d = 4+69 = 73.
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