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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 241

waec 2021

A solid brass cube is melted and recast as a solid cone of height h and base radius r. If the height of the cube is h, find r in terms of h.

Ar = h

Br = √\(\frac{3h^2}{π}\)

Cr = πh

Dr = h √\(\frac{3}{h}\)

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Question 242

waec 2021

In the diagram, △XYZ is produced to T. if |XY| = |ZY| and ∠XYT = 40°, find ∠XZT

A110°

B130°

C140°

D180°

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Question 243

waec 2021

The diagonal of a rhombus are 12cm and 5cm. calculate its perimeter

A26cm

B24cm

C17cm

D34cm

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Question 244

waec 2021

If \(\frac{2}{x-3}\) - \(\frac{3}{x-2}\) = \(\frac{p}{(x-3)(x -2)}\), find p.

A5 - x

B- (x + 5)

C13 - x

D- (5x - 13)

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Question 245

waec 2021

if tanθ = \(frac{3}{4}\), 180° < θ < 270°, find the value of cosθ.

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

B\(\frac{3}{5}\)

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

D-\(\frac{3}{5}\)

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Question 246

waec 2021

Find The quadratic Equation Whose Roots Are -2q And 5q.

A3x\(^2\) + 3qx - 10q\(^2\)

Bx\(^2\) + 3qx + 10q\(^2\)

Cx\(^2\) - 3qx + 10q\(^2\)

Dx\(^2\) - 3qx - 10q\(^2\)

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Question 247

waec 2021

consider the statements:

P = All students offering Literature(L) also offer History(H);

Q = Students offering History(H) do not offer Geography(G).

Which of the Venn diagram correctly illustrate the two statements?

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Question 248

waec 2021

In △LMN, |LM| = 6cm, ∠LNM = x and sin x = sin x = \(\frac{3}{5}\).

Find the area of △LMN

A60cm\(^2\)

B48cm\(^2\)

C24cm\(^2\)

D30cm\(^2\)

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Question 249

waec 2021

The height of an equilateral triangle of side is 10\(\sqrt{3}\)cm. Calculate its perimeter.

A20cm

B60cm

C40cm

D30cm

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Question 250

waec 2021

A trader paid import duty of 38 kobo in the naira on the cost of an engine. If a total of #22,800.00 was paid as import duty, calculate the cost of the engine.

A#60,000.00

B#120,000.00

C#24,000.00

D#18,000.00

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Question 251

waec 2021

make u the subject in x =\(\frac{2u-3}{3u + 2}\)

Au = \(\frac{2x + 3}{3x - 2}\)

Bu = \(\frac{2x - 3}{3x - 2}\)

Cu = \(\frac{2x + 3}{2 - 3x}\)

Du = \(\frac{2x + 3}{3x + 2}\)

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Question 252

waec 2021

The sum of the interior angles of a regular polygon with k sides is (3k-10) right angles. Find the size of the exterior angle?

A60°

B40°

C90°

D120°

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Question 253

waec 2021

In the diagram, ∠ABC and ∠BCD are right angles, ∠BAD = t and ∠EDF = 70°. Find the value of t.

A70°

B165°

C140°

D110°

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Question 254

waec 2021

If 4x+2y=16 and 6x-2y=4 , find the value of (y-x).

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Question 255

waec 2021

Simplify 2√7- \(\frac{14}{√7} + \frac{7}{√21}\)

A\(\frac{√21}{21}\)

B7\(\frac{√21}{21}\)

C\(\frac{√21}{3}\)

D3√21

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Question 256

waec 2021

The circumference of a circular track is 9km. A cyclist rides round it a number of times and stops after covering a distance of 302km. How far is the cyclist from the starting point?

A5km

B6km

C7km

D3km

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Question 257

waec 2021

If 16 * 2\(^{(x + 1)}\) = 4\(^x\) * 8\(^{(1 - x)}\), find the value of x.

A-4

D-1

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Question 258

waec 2021

Mensah is 5 years old and joyce is thrice as old as mensah. In how many years will joyce be twice as old as Mensah?

A3 years

B10 years

C5 years

D15 years

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Question 259

waec 2021

What number should be subtracted from the sum of 2 \(\frac{1}{6}\) and 2\(\frac{7}{12}\) to give 3\(\frac{1}{4}\)?

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

B1\(\frac{1}{2}\)

C1\(\frac{1}{6}\)

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

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Question 260

waec 2021

Factorize 6pq-3rs-3ps+6qr

A3(r -p)(2q + s)

B3(p + r)( 2q - 2q - s)

C3(2q - s)(p + r)

D3(r - p)(s - 2q)

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