Arithmetic progression - Jamb Mathematics Past Questions and Answers

Question 16:

• JAMB 1999

Three consecutive positive integers k, l and m are such that l\(^2\) = 3(k+m). Find the value of m.

A. 4
B. 5
C. 6
D. 7

Question 17:

• JAMB 2000

The 3rd term of an A.P is 4x - 2y and the 9th term is 10x - 8y. Find the common difference.

A. 19x - 17y
B. 8x - 4y
C. X - y
D. 2x

Question 18:

• JAMB 2001

The sixth term of an A.P is half of its twelfth term. The first term of the A.P is equal to

A. Zero
B. Half of the common difference
C. Double the common difference
D. The common difference

Question 19:

• JAMB 2002

If the 9th term of an A.P is five times the 5th term, find the relationship between a and d.

A. 2a + 2 = 0
B. 3a + 5d = 0
C. A + 3d = 0
D. A + 2d = 0

Question 20:

• JAMB 2003

The sum of the first n terms of an arithmetic progresssion is 252. If the first term is -16 and the last term is 72, find the number of terms in the series

A. 6
B. 7
C. 8
D. 9