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JAMB Mathematics 2013 Objective — Question 20

Question 20 of 50 from the Joint Admissions and Matriculation Board (JAMB) Mathematics 2013 Objective paper, with the correct answer and a full explanation.

The nth term of the progression 4/2, 7/3, 10/4, 13/5,… is:

A. A. (3n+1)/(n+1)Correct
B. B. (3n−1)/(n+1)
C. C. (1−3n)/(n+1)
D. D. (3n+1)/(n−1)

Explanation

Numerator AP: 4,7,10,13 → 3n+1; denominator AP: 2,3,4,5 → n+1; Tₙ=(3n+1)/(n+1).

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