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Mathematics Past Questions

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2,359 questions JAMB 2359 WAEC 1853 NECO 179 POST_UTME 6 CUSTOM 10

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2,359 questions

Question 1 of 20 2,359 total questions

Question 741

jamb 1997

Determine x + y if \(\begin{pmatrix} 2 & -3 \\ -1 & 4 \end{pmatrix}\) \(\begin{pmatrix} x \\ y \end{pmatrix}\) = \(\begin{pmatrix}-1 \\ 8 \end{pmatrix}\)

D12

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Question 742

jamb 1997

If X \(\ast\) Y = X + Y - XY, find x when (x \(\ast\) 2) + (x \(\ast\) 3) = 68

A24

B22

C-12

D-21

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Question 743

jamb 1997

Two binary operations \(\ast\) and \(\oplus\) are defines as m \(\ast\) n = mn - n - 1 and m \(\oplus\) n = mn + n - 2 for all real numbers m, n.

Find the value of 3 \(\oplus\) (4 \(\ast\) 5)

A60

B57

C54

D42

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Question 744

jamb 1997

The nth term of a sequence is given \(3^{1 - n}\), find the sum of the first three terms of the sequence.

A\(\frac{13}{9}\)

C\(\frac{1}{3}\)

D\(\frac{1}{9}\)

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Question 745

jamb 1997

Sn is the sum of the first n terms of a series given by Sn = n\(^2\) - 1. Find the nth term

A4n + 1

B4n - 1

C2n + 1

D2n - 1

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Question 746

jamb 1997

Find the range of values of x which satisfies the inequality 12x² < x + 1

A-\(\frac{1}{4}\) < x < \(\frac{1}{3}\)

B\(\frac{1}{4}\) < x < -\(\frac{1}{3}\)

C-\(\frac{1}{3}\) < x < \(\frac{1}{4}\)

D-\(\frac{1}{4}\) < x < - \(\frac{1}{3}\)

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Question 747

jamb 1997

Let f(x) = 2x + 4 and g(x) = 6x + 7 here g(x) > 0. Solve the inequality \(\frac{f(x)}{g(x)}\) < 1

Ax < - \(\frac{3}{4}\)

Bx > - \(\frac{4}{3}\)

Cx > - \(\frac{3}{4}\)

Dx > - 12

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Question 748

jamb 1997

Find the value of k if \(\frac{5 + 2r}{(r + 1)(r - 2)}\) expressed in partial fraction is \(\frac{k}{r - 2}\) + \(\frac{L}{r + 1}\) where K and L are constants

D-1

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Question 749

jamb 1997

What value of g will make the expression 4x² - 18xy + g a perfect square?

B\(\frac{9y^2}{4}\)

C81y^2

D\(\frac{18y^2}{4}\)

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Question 750

jamb 1997

Make F the subject of the formula t = \(\sqrt{\frac{v}{\frac{1}{f} + \frac{1}{g}}}\)

A\(\frac{gv-t^2}{gt^2}\)

B\(\frac{gt^2}{gv-t^2}\)

C\(\frac{v}{\frac{1}{t^2} - \frac{1}{g}}\)

D\(\frac{gv}{t^2 - g}\)

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Question 751

jamb 1997

Find the minimum value of X² - 3x + 2 for all real values of x

A-\(\frac{1}{4}\)

B-\(\frac{1}{2}\)

C\(\frac{1}{4}\)

D\(\frac{1}{2}\)

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Question 752

jamb 1997

Solve the simultaneous equations \(\frac{2}{x} - {\frac{3}{y}}\) = 2, \(\frac{4}{x} + {\frac{3}{y}}\) = 10

Ax = \(\frac{3}{2}\), y = \(\frac{3}{2}\)

Bx = \(\frac{1}{2}\), y = \(\frac{3}{2}\)

Cx = \(\frac{-1}{2}\), y = \(\frac{-3}{2}\)

Dx = \(\frac{1}{3}\), y = \(\frac{3}{2}\)

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Question 753

jamb 1997

If the function f(fx) = x³ + 2x² + qx - 6 is divisible by x + 1, find q

A-5

B-2

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Question 754

jamb 1997

A survey of 100 students in an institution shows that 80 students speak Hausa and 20 students speak Igbo, while only 9 students speak both language. How many students speak neither Hausa nor Igbo?

C11

D20

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Question 755

jamb 1997

If U = (s, p, i, e, n, d, o, u, r), X = (s, p, e, n, d) Y = (s, e, n, o, u), Z = (p, n, o, u, r) find X ∩( Y ∪ Z)

A(p, o, u, r)

B(s, p, d, r)

C(s, p, n, e)

D(n, d, u)

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Question 756

jamb 1997

Find the simple interest rate percent per annum at which N1,000 accumulates to N1,240 in 3 years

A6%

B8%

C10%

D12%

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Question 757

jamb 1997

Simplify \(\frac{2\sqrt{3} + 3\sqrt{5}}{3\sqrt{5} - 2\sqrt{3}}\)

A\(\frac{19 + 4\sqrt{25}}{11}\)

B\(\frac{19 + 4\sqrt{15}}{11}\)

C\(\frac{19 + 2\sqrt{15}}{11}\)

D\(\frac{19 + 2\sqrt{15}}{19}\)

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Question 758

jamb 1997

If \(8^{\frac{x}{2}} = (2^{\frac{3}{8}})(4^{\frac{3}{4}}\)), find x

A\(\frac{3}{8}\)

B\(\frac{3}{4}\)

C\(\frac{4}{5}\)

D\(\frac{5}{4}\)

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Question 759

jamb 1997

Given that log_a2 = 0.693 and log_a3 = 1.097, find log_a 13.5

A1.404

B1.790

C2.598

D2.790

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Question 760

jamb 1997

Find the value of (0.006)³ + (0.004)³ in standard form

A2.8 x 10^-9

B2.8 x 10^-7

C2.8 x 10^-8

D2.8 x 10^-6

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