Geometric Progression - Mathematics Jamb Past Questions and Answers

Question 26 :

• JAMB 2007

Find the sum to infinity of the series \(2+\frac{3}{2}+\frac{9}{8}+\frac{27}{32}+......\)

A. 1
B. 2
C. 8
D. 4

Question 27 :

• JAMB 2009

Find to infinity, the sum of the sequence \(1, \frac{9}{10}, \left(\frac{9}{10}\right)^2, \left(\frac{9}{10}\right)^3,.....\)

A. 10
B. 9
C. ¹⁰/₉
D. ⁹/₁₀

Question 28 :

• JAMB 2010

Find the sum to infinity of the following series. 0.5 + 0.05 + 0.005 + 0.0005 + .....

A. \(\frac{5}{8}\)
B. \(\frac{5}{7}\)
C. \(\frac{5}{11}\)
D. \(\frac{5}{9}\)

Question 29 :

• JAMB 2011

Find the sum of the first 18 terms of the series 3, 6, 9,..., 36.

A. 505
B. 513
C. 433
D. 635

Question 30 :

• JAMB 2011

The seconds term of a geometric series is 4 while the fourth term is 16. Find the sum of the first five terms

A. 60
B. 62
C. 54
D. 64