Geometric Progression - Mathematics Jamb Past Questions and Answers

Question 1 :

• JAMB 1979

The mean of the numbers 1.2, 1.0, 0.9, 1.4, 0.8, 0.8, 1.2 and 1.1 is

A. 1.5
B. 0.8
C. 1.0
D. 1.02
E. 1.05

Question 2 :

• JAMB 2019

If the 3rd and 7th terms of a G.P are 9 and 1/9 respectively. Find the common ratio.

A. \(\frac{1}{3}\)
B. \(\frac{1}{9}\)
C. \(\frac{2}{3}\)
D. \(\frac{2}{9}\)

Question 3 :

• JAMB 2017

Find the sum to infinity of the series
\(\frac{1}{4}\), \(\frac{1}{8}\), \(\frac{1}{16}\),..........

A. \(\frac{1}{2}\)
B. \(\frac{3}{5}\)
C. \(\frac{-1}{5}\)
D. \(\frac{73}{12}\)

Question 4 :

• JAMB 2017

Find the sum to infinity of the series
\(\frac{1}{4}\), \(\frac{1}{8}\), \(\frac{1}{16}\),..........

A. \(\frac{1}{2}\)
B. \(\frac{3}{5}\)
C. \(\frac{-1}{5}\)
D. \(\frac{73}{12}\)

Question 5 :

• JAMB 2016

If the 2nd term of a G.P is \(\frac{8}{9}\) and the 6th term is 4\(\frac{1}{2}\). Find the common ratio.

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