Mathematics Past Questions

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48 questions JAMB 2359 WAEC 1853 NECO 179 POST_UTME 6 CUSTOM 10
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Past Questions

48 questions
Question 1 of 8 48 total questions
Question 21
jamb 1982

Write the equation 2 log2x - x log2(1 + y) = 3 in a form not involving logarithms

A2x(1 + y) = 3
B2x - x(1 + y) = 8
Cx2 = 8(1 + y)x
Dx2 - x(1 + y) = 8
Ex2 - (1 + y)2 = 8
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Question 22
jamb 1982

The graphical method of solving the equation x3 + 3x2 + 4x - 28 = 0 is by drawing the graphs of the curves

Ay = x3 and y = 3x2 + x - 28
By = x3 + 3x2 + 4x + 4 and the line y = \(\frac{28}{x}\)
Cy = x3 + 3x2 + 4x and y
Dy = x2 + 3x + 4 and y = \(\frac{28}{x}\)
Ey = x2 + 3x + 4 and line y = 28x
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Question 23
jamb 1982

The solution of the quadratic equation bx\(^2\) + cx + a = 0 is given by

Ax = b \(\pm\) \(\frac{\sqrt{b^2 - 4ac}}{2a}\)
Bx = c \(\pm\) \(\frac{\sqrt{b^2 - 4ab}}{2b}\)
Cx = -c \(\pm\) \(\frac{\sqrt{c^2 - 4ab}}{2b}\)
Dx = -b \(\pm\) \(\frac{\sqrt{b^2 - 4ac}}{2b}\)
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Question 24
jamb 1982

The factors of 6x - 5 - x2 are

A-(x + 3)(x + 2)
B(x + 5)(x + 1)
C(x - 5)(1 - x)
D(x + 1)(x + 5)
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Question 25
jamb 1982

Seven years ago, the age of a father was three times that of his son, but in six years time the age of the son will be half that of his father, representing the present ages of the father and son by x and y, respectively, the two equations relating x and y are

A3y - x = 0; 2y - x = 0
B3y - x = 14; x - 2y = 6
C3y - x =7; x - 2y = 6
D3y - x = 14; y - 2x = 6
Ex + 3y = 7; x = 2y = 12
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Question 26
jamb 1982

If N560.70 is shared in the ratio 7 : 2 : 1, what is the smallest share?

AN392.49
BN56.70
CN113.40
DN112.14
EN56.07
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Question 27
jamb 1982

Simplify 3 - 2 \(\div\) \(\frac{4}{5}\) + \(\frac{1}{2}\)

A1\(\frac{3}{4}\)
B-1
C1\(\frac{3}{10}\)
D1
E1\(\frac{9}{10}\)
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Question 28
jamb 1982

Rationalize the expression \(\frac{1}{\sqrt{2} + \sqrt{5}}\)

A\(\frac{1}{3}\)(\(\sqrt{5} - \sqrt{2}\)
B\(\frac{\sqrt{2}}{3}\) + \(\frac{\sqrt{5}}{5}\)
C\(\sqrt{2} - \sqrt{5}\)
D5(\(\sqrt{2} - \sqrt{5}\)
E\(\frac{1}{3}\)(\(\sqrt{2} - \sqrt{5}\)
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