Jamb Mathematics Past Questions and Answers

Question 726:

• JAMB 1983

If 0.0000152 x 0.042 = A x 10⁸, where 1 \(\leq\) A < 10, find A and B

A. A = 9, B = 6.38
B. A = 6.38, B = -9
C. A = -6.38, B = -9
D. A = -9, B = -6.38

Question 727:

• JAMB 1983

If (x + 2) and (x - 1) are factors of the expression \(Lx^{3} + 2kx^{2} + 24\), find the values of L and k.

A. 1 = -6, k = -9
B. 1 = -2, k = 1
C. K = -1, 1 = -2
D. 1 = 0, k = 1
E. K = 0,1 = 6

Question 728:

• JAMB 1983

Make T the subject of the equation \(\frac{av}{1 - v}\) = \(\sqrt{\frac{2v + T}{a + 2T}}\)

A. T = \(\frac{3av}{1 - v}\)
B. T = \(\frac{1 + v}{2a^2v^3}\)
C. T = \(\frac{2v(1 - v)^3 - a^4v^3}{2a^3v^3 + (1 - v)^2}\)
D. \(\frac{2v(1 - v)^3 - a^4 v^3}{2a^3v^ 3 - (1 - v)^3}\)

Question 729:

• JAMB 1983

The value of (0.03)3 - (0.02)3 is

A. 0.019
B. 0.0019
C. 0.00019
D. 0.000019
E. 0.000035

Question 730:

• JAMB 1983

y varies partly as the square of x and partly as the inverse of the square root of x.Write down the expression for y if y = 2 when x = 1 and y = 6 when x = 4

A. Y = \(\frac{10x^2}{31} + \frac{52}{31\sqrt{x}}\)
B. Y = x² + \(\frac{1}{\sqrt{x}}\)
C. Y = x² + \(\frac{1}{x}\)
D. Y = \(\frac{x^2}{31} + \frac{1}{31\sqrt{x}}\)