Progression - Jamb Mathematics Past Questions and Answers

Question 46:

• 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 47:

• 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 48:

• 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 49:

• JAMB 2002

The sum to infinity of the series: 1 + (1/3) + (1/9) + (1/27) + ... is

A. 11/3
B. 10/3
C. 5/2
D. 3/2

Question 50:

• JAMB 2003

Three consecutive terms of a geometric progression are given as n-2, n and n+3. Find the common ratio

A. 1/4
B. 1/2
C. 2/3
D. 3/2