ALGEBRA - Jamb Mathematics Past Questions and Answers

Question 261:

• JAMB 1990

Find the sum of the first twenty terms of the progression log a, log a², log a³.....

A. Log a²⁰
B. Log a²¹
C. Log a²⁰⁰
D. Log a²¹⁰

Question 262:

• JAMB 1990

Find the sum of the first 18 terms of the progression 3, 6, 12......

A. 3(2¹⁷ - 1)
B. 3(2¹⁸ - 1)
C. 3(2¹⁸ + 1)
D. 3(2¹⁷ - 1)

Question 263:

• JAMB 1990

What is the equation of the quadratic function represented by the graph?

A. Y = x² + x - 2
B. Y = -x² - x + 2
C. Y = x² - x - 2
D. Y = -x² - x + 2

Question 264:

• JAMB 1991

Multiply (x² - 3x + 1) by (x - a)

A. X³ - (3 + a) x² + (1 + 3a)x - a
B. X³ - (3 - a)x² + 3ax - a
C. X³ - (3 - a)x² - (1 = 3a) - a
D. X³ + (3 - a)x² + (1 + 3a) - a

Question 265:

• JAMB 1991

Evaluate \(\frac{xy^2 - x^2y}{x^2 - xy^1}\) When x = -2 and y = 3

A. 3
B. -\(\frac{3}{5}\)
C. \(\frac{3}{5}\)
D. -3