Progression - Jamb Mathematics Past Questions and Answers

Question 71:

• JAMB 2013

If the sum of the first two terms of a G.P. is 3, and the sum of the second and the third terms is -6, find the sum of the first term and the common ratio

A. -2
B. -3
C. -5
D. 5

Question 72:

• JAMB 2013

The n^th term of the progression \(\frac{4}{2}\), \(\frac{7}{3}\), \(\frac{10}{4}\), \(\frac{13}{5}\) is ...

A. \(\frac{1 - 3n}{n + 1}\)
B. \(\frac{3n + 1}{n + 1}\)
C. \(\frac{3n + 1}{n - 1}\)
D. \(\frac{3n - 1}{n + 1}\)

Question 73:

• JAMB 2014

The 4th term of an A.P. is 13 while the 10th term is 31. Find the 24th term.

A. 89
B. 75
C. 73
D. 69

Question 74:

• JAMB 2014

What is the common ratio of the G.P. \((\sqrt{10} + \sqrt{5}) + (\sqrt{10} + 2\sqrt{5}) + ... \)?

A. \(\sqrt{2}\)
B. \(\sqrt{5}\)
C. 3
D. 5

Question 75:

• JAMB 2015

The first and last term of a linear sequence (AP) are 6 and 10 respectively. If the sum of the sequence is 40. Find the number of terms

A. Nth = 3
B. Nth = 4
C. Nth = 5
D. Nth = 6