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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 291

waec 2020

Given that x is directly proportional to y and inversely proportional to Z, x = 15 when y = 10 and Z = 4, find the equation connecting x, y and z

Ax = \(\frac{6y}{z}\)

Bx = \(\frac{12y}{z}\)

Cx = \(\frac{3y}{z}\)

Dx = \(\frac{3y}{2z}\)

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Question 292

waec 2020

Find the quadratic equation whose roots are \(\frac{1}{2}\) and -\(\frac{1}{3}\)

A3x\(^2\) + x + 1 = 0

B6x\(^2\) + x - 1 = 0

C3x\(^2\) + x - 1 = 0

D6x\(^2\) - x - 1 = 0

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Question 293

waec 2020

Make m the subject of the relation k = \(\sqrt{\frac{m - y}{m + 1}}\)

Am = \(\frac{y + k^2}{k^2 + 1}\)

Bm = \(\frac{y + k^2}{1 - k^2}\)

Cm = \(\frac{y - k^2}{k^2 + 1}\)

Dm = \(\frac{y - k^2}{1 - k^2}\)

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Question 294

waec 2020

Solve \(\frac{1}{3}\)(5 - 3x) < \(\frac{2}{5}\)(3 - 7x)

Ax > \(\frac{7}{22}\)

Bx < \(\frac{7}{22}\)

Cx > \(\frac{-7}{27}\)

Dx < \(\frac{-7}{27}\)

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Question 295

waec 2020

The first term of a geometric progression (G.P) is 3 and the 5th term is 48. Find the common ratio.

D16

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Question 296

waec 2020

The implication x \(\to\) y is equivalent to?

A~ y \(\to\) ~ x

By \(\to\) ~ x

C~ x \(\to\) ~ y

Dy \(\to\) x

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Question 297

waec 2020

Solve 3x - 2y = 10 and x + 3y = 7 simultaneously

Ax = -4 and y = 1

Bx = -1 and y = -4

Cx = 1 and y = 4

Dx = 4 and y = 1

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Question 298

waec 2020

If x = 3 and y = -1, evaluate 2(x\(^2\) - y\(^3\))

A24

B22

C20

D16

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Question 299

waec 2020

Given that \(\frac{\sqrt{3} + \sqrt{5}}{\sqrt{5}}\)

= x + y\(\sqrt{15}\), find the value of (x + y)

A1\(\frac{3}{5}\)

B1\(\frac{2}{5}\)

C1\(\frac{1}{5}\)

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

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Question 300

waec 2020

An amount of N550,000.00 was realized when a principal, x was saved at 2% simple interest for 5 years. Find the value of x

AN470,000.00

BN480,000.00

CN490,000.00

DN500,000.00

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Question 301

waec 2020

If 101\(_{\text{two}}\) + 12\(_y\) = 23\(_{\text{five}}\). Find the value of y

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Question 302

waec 2020

Express 1 + 2 log10\(^3\) in the form log10\(^9\)

Alog10\(^{90}\)

Blog10\(^{19}\)

Clog10\(^{9}\)

Dlog10\(^{6}\)

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Question 303

waec 2020

Simplify; [(\(\frac{16}{9}\))\(^{\frac{-3}{2}}\) x 16\(^{\frac{-3}{4}}\)]\(^{\frac{1}{3}}\)

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

B\(\frac{9}{16}\)

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

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

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Question 304

waec 2020

If X = {x : x < 7} and Y = {y:y is a factor of 24} are subsets of \(\mu\) = {1, 2, 3...10} find X \(\cap\) Y.

A{2, 3, 4, 6}

B{1, 2, 3, 4, 6}

C{2, 3, 4, 6, 8}

D{1, 2, 3, 4, 6, 8}

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Question 305

waec 2020

Evaluate and correct to two decimal places, 75.0785 - 34.624 + 9.83

A30.60

B50.29

C50.28

D30.63

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Question 306

jamb 2020

Find the non-zero positive value of x which satisfies the equation

\(\begin{bmatrix} x & 1 & 0 \\ 1 & x & 1 \\ 0 & 1 & x \end{bmatrix}\) = 0

B\(\sqrt{3}\)

C\(\sqrt{2}\)

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Question 307

jamb 2020

A surveyor walks 500m up a hill which slopes at an angle of 30\(^o\). Calculate the vertical height through which he rises

A252m

B500m

C250m

D255m

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Question 308

jamb 2020

The mean age group of some students is 15years. When the age of a teacher, 45 years old, is added to the ages of the students, the mean of their ages become 18 years. Find the number of students in the group.

C15

D42

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Question 309

jamb 2020

The sum of the interior angle of pentagon is 6x + 6y. Find y in terms of x.

Ay = 6 - x

By = 90 - x

Cy = 120 - x

Dy = 150 - x

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Question 310

jamb 2020

In a class of 40 students, 32 offer mathematics, 24 offer physics and 4 offer neither mathematics nor physics. How many offer both mathematics and physics?

C16

D20

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