Jamb Mathematics Past Questions and Answers

Question 1836:

• JAMB 2006

A binary operation * on the set of rational numbers is defined as \(x \ast y = \frac{x^2 - y^2}{2xy}\). Find \(-5 \ast 3\)

A. \(\frac{-8}{15}\)
B. \(\frac{8}{15}\)
C. \(\frac{17}{15}\)
D. \(\frac{-17}{15}\)

Question 1837:

• JAMB 2006

Find the value of k if the expression kx³ + x² - 5x - 2 leaves a remainder 2 when it is divided by 2x + 1

A. 10
B. 8
C. -10
D. -8

Question 1838:

• JAMB 2006

Solve the inequalities for which \(\frac{x+4}{3}-\frac{x-3}{2} < 4\)

A. X < 7
B. X > -7
C. X < -7
D. X > 7

Question 1839:

• JAMB 2006

The cost of renovating a 6 m square room is N540. What is the cost of renovating a 9 m square room?

A. N1215
B. N720
C. N1620
D. N810

Question 1840:

• JAMB 2006

The sum of the first n positive integers is

A. ¹/₂ n(n-1)
B. N(n+1)
C. N(n-1)
D. ¹/₂ n(n+1)