Progression - Jamb Mathematics Past Questions and Answers

Question 11:

• 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 12:

• 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 13:

• 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 14:

• JAMB 1978

The sum of the progression is 1 + x + x2 + x3 + ......

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

Question 15:

• JAMB 1978

In a geometric progression, the first term is 153 and the sixth term is \(\frac{17}{27}\). The sum of the first four terms is

A. \(\frac{860}{3}\)
B. \(\frac{680}{3}\)
C. \(\frac{608}{3}\)
D. \(\frac{680}{3}\)