ALGEBRA - Jamb Mathematics Past Questions and Answers

Question 331:

• JAMB 1995

\(\begin{vmatrix} -2 & 1 & 1 \\ 2 & 1 & k \\1 & 3 & -1 \end{vmatrix}\) = 23

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

Question 332:

• JAMB 1995

If x = \(\begin{pmatrix} 1 & 2 \\ 0 & 3 \end{pmatrix}\) and y = \(\begin{pmatrix} 2 & 1 \\ 4 & 3 \end{pmatrix}\). Find xy.

A. \(\begin{pmatrix} 10 & 7 \\ 12 & 9 \end{pmatrix}\)
B. \(\begin{pmatrix} 2 & 7 \\ 4 & 17 \end{pmatrix}\)
C. \(\begin{pmatrix} 10 & 4 \\ 4 & 6 \end{pmatrix}\)
D. \(\begin{pmatrix} 4 & 3 \\ 10 & 9 \end{pmatrix}\)

Question 333:

• JAMB 1995

Use the graph of the curve y = f(x)to solve the inequality f(x) \(\leq\) 0

A. -1 \(\geq\) x \(\geq\) 1, x \(\geq\) 2
B. X \(\leq\) -1, 1 \(\geq\) x \(\geq\) 2
C. X \(\geq\) -1, 1 \(\geq\) x \(\geq\) 2
D. X \(\geq\) 2, -1 \(\geq\) x \(\geq\) 1

Question 334:

• JAMB 1995

A worker's present salary is N24,000 per annum. His annual increment is 10% of his basic salary. What would be his annual salary at the beginning of the third year?

A. N28,800
B. N29,040
C. N31,200
D. N31,944

Question 335:

• JAMB 1995

If x - 1 and x + 1 are both factors of the equation x\(^3\) + px\(^2\) + qx + 6 = 0, evaluate p and q

A. -6, -1
B. 6, 1
C. 1, -1
D. 6, -6