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Mathematics Past Questions

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4,407 questions JAMB 2359 WAEC 1853 NECO 179 POST_UTME 6 CUSTOM 10

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4,407 questions

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Question 651

waec 2013

If 2 log x (3\(\frac{3}{8}\)) = 6, find the value of x

A\(\frac{3}{2}\)

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

C\(\frac{2}{3}\)

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

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Question 652

waec 2013

Which of the following is not a probability of Mary scoring 85% in a mathematics test?

A0.15

B0.57

C0.94

D1.01

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Question 653

waec 2013

The bearing of Y from X is 060º and the bearing of Z from Y = 060º. Find the bearing of X from Z

A300^o

B240^o

C180^o

D120^o

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Question 654

waec 2013

An object is 6m away from the base of a mast. The angle of depression of the object from the top pf the mast is 50^o, Find, correct to 2 decimal places, the height of the mast

A8.60m

B7.51m

C7.15m

D1.19m

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Question 655

waec 2013

If sin x = \(\frac{5}{13}\) and 0^o \(\leq\) x \(\leq\) 90^o, find the value of (cos x - tan x)

A\(\frac{7}{13}\)

B\(\frac{12}{13}\)

C\(\frac{79}{156}\)

D\(\frac{209}{156}\)

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Question 656

waec 2013

A cube and cuboid have the same base area. The volume of the cube is 64cm\(^3\) while that of the cuboid is 80cm\(^3\). Find the height of the cuboid

A1cm

B3cm

C5cm

D6cm

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Question 657

waec 2013

A chord is 2cm from the centre of a circle. If the radius of the circle is 5cm, find the length of the chord

A2\(\sqrt{21}\)cm

B\(\sqrt{42}\)cm

C2\(\sqrt{19}\)cm

D\(\sqrt{21}\)cm

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Question 658

waec 2013

Given that \(p^{\frac{1}{3}}\) = \(\frac{\sqrt[3]{q}}{r}\), make q the subject of the equation

Aq = p\(\sqrt{r}\)

Bq = p³r

Cq = pr³

Dq = pr^{\(\frac{1}{3}\)}

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Question 659

waec 2013

If \(\frac{1}{2}\)x + 2y = 3 and \(\frac{3}{2}\)x - 2y = 1, find (x + y)

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Question 660

waec 2013

If x = 64 and y = 27, evaluate: \(\frac{x^{\frac{1}{2}} - y^{\frac{1}{3}}}{y - x^{\frac{2}{3}}}\)

A2\(\frac{1}{5}\)

C\(\frac{5}{11}\)

D\(\frac{11}{43}\)

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Question 661

waec 2013

Solve the inequality: \(\frac{2x - 5}{2} < (2 - x)\)

Ax > 0

Bx < \(\frac{1}{4}\)

Cx > 2\(\frac{1}{2}\)

Dx < 2\(\frac{1}{4}\)

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Question 662

waec 2013

Simplify: \(\frac{x^2 - y^2}{(x + y)^2} \div \frac{(x - y)^2}{(3x + 3y)}\)

A\(\frac{x - y}{3}\)

Bx + y

C\(\frac{3}{x - y}\)

Dx - y

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Question 663

waec 2013

Four oranges sell for Nx and three mangoes sell for Ny. Olu bought 24 oranges and 12 mangoes. How much did he pay in terms of x and y?

AN94x + 6y)

BN(6x + 4y)

CN(24x + 12y)

DN(12x + 24y)

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Question 664

waec 2013

A sales boy gave a change of N68 instead of N72. Calculate his percentage error

A4%

B5\(\frac{5}{9}\)%

C5\(\frac{15}{17}\)%

D7%

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Question 665

waec 2013

If \(\sqrt{50} - K\sqrt{8} = \frac{2}{\sqrt{2}}\), find K

A-2

B-1

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Question 666

waec 2013

If Un = n(n² + 1), evaluate U5 - U4

A18

B56

C62

D80

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Question 667

waec 2013

Simplify \(\frac{1\frac{7}{8} \times 2\frac{2}{5}}{6\frac{3}{4} \div \frac{3}{4}}\)

B4\(\frac{1}{2}\)

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

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Question 668

waec 2013

In what number base is the addition 465 + 24 + 225 = 1050?

Aten

Bnine

Ceight

Dseven

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Question 669

waec 2013

If 9^{(2 - x)} = 3, find x

B\(\frac{3}{2}\)

D\(\frac{5}{2}\)

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Question 670

waec 2013

Multiply 2.7 x 10^-4 by 6.3 x 10⁶ and leave your answers in standard form

A1.7 x 10³

B1.70 x 10³

C1.701 x 10³

D17.01 x 10³

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