Arithmetic progression - Jamb Mathematics 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 2017

What is the next number in the series 2, 1, \(\frac{1}{2}\), \(\frac{1}{4}\)...

A. \(\frac{1}{3}\)
B. \(\frac{2}{8}\)
C. \(\frac{3}{7}\)
D. \(\frac{1}{8}\)

Question 3:

• JAMB 2016

The nth term of the sequence 3, 9, 27, 81.....is

A. 3 x 3^n-2
B. 3 x 3^n-1
C. 3 x 3ⁿ⁺²
D. 3 x 3ⁿ⁺¹

Question 4:

• 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

Question 5:

• 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