POST UTME PAN-ATLANTIC UNIVERSITY 2024 Mathematics | Objective

Are you preparing for POST UTME PAN-ATLANTIC UNIVERSITY exams? Reviewing past questions is one of the most effective ways to guarantee a high score. This practice hub features authentic 2024 Mathematics (Objective) questions designed to simulate the real exam environment.

Practice these randomly selected questions to test your readiness.

Question 1
Find the derivative of the function ( f(x) = \frac{1}{2} \log_{10} \( x^2 + 1 \) ) u\sing the chain rule.
Correct A. f'(x) = \frac{1}{x^2 + 1} cdot \frac{2x}{x^2 + 1}
B. f'(x) = \frac{1}{x^2 + 1} cdot \frac{2x}{x^2 + 1} + \frac{2x}{x^2 + 1}
C. f'(x) = \frac{1}{x^2 + 1} cdot \frac{2x}{x^2 + 1} - \frac{2x}{x^2 + 1}
D. f'(x) = \frac{1}{x^2 + 1} cdot \frac{2x}{x^2 + 1} + \frac{2}{x^2 + 1}

Correct Answer: A

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Question 2
A rec\tangular prism has a length of 5 cm, a width of 3 cm, and a height of 2 cm. Find the surface area of the prism.
Correct A. 2\( 5 cdot 3 + 3 cdot 2 + 5 cdot 2 \)
B. 2\( 5 cdot 3 + 3 cdot 2 + 5 cdot 2 \) + 2\( 5 cdot 2 + 3 cdot 2 + 5 cdot 3 \)
C. 2\( 5 cdot 3 + 3 cdot 2 + 5 cdot 2 \) - 2\( 5 cdot 2 + 3 cdot 2 + 5 cdot 3 \)
D. 2\( 5 cdot 3 + 3 cdot 2 + 5 cdot 2 \) + 2\( 5 cdot 2 + 3 cdot 2 + 5 cdot 3 \) + 2\( 5 cdot 2 + 3 cdot 2 + 5 cdot 3 \)

Correct Answer: A

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Question 3
Find the area under the curve \( y = \frac{1}{x^2 + 1} \) from \( x = 0 \) to \( x = 1 \).
Correct A. \int_0^1 \frac{1}{x^2 + 1} dx
B. \int_0^1 \frac{1}{x^2 + 1} dx + \int_0^1 \frac{1}{x^2 + 1} dx
C. \int_0^1 \frac{1}{x^2 + 1} dx - \int_0^1 \frac{1}{x^2 + 1} dx
D. \int_0^1 \frac{1}{x^2 + 1} dx + \int_0^1 \frac{1}{x^2 + 1} dx + \int_0^1 \frac{1}{x^2 + 1} dx

Correct Answer: A

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Question 4
A circle has a radius of 4 cm. Find the area of the circle.
Correct A. \pi r^2
B. \pi r^2 + \pi r^2
C. \pi r^2 - \pi r^2
D. \pi r^2 + \pi r^2 + \pi r^2

Correct Answer: A

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Question 5
Find the derivative of the function ( f(x) = \sin^2 x ) u\sing the chain rule.
Correct A. f'(x) = 2 \sin x \cos x
B. f'(x) = 2 \sin x \cos x + 2 \cos x \sin x
C. f'(x) = 2 \sin x \cos x - 2 \cos x \sin x
D. f'(x) = 2 \sin x \cos x + 2 \cos x \sin x

Correct Answer: A

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Question 6
A random sample of 25 students from a university had a mean height of 175.5 cm with a s\tandard deviation of 5.2 cm. If the population s\tandard deviation is unknown, calculate the 95% confidence interval for the mean height of all students in the university.
Correct A. 169.3 cm, 181.7 cm
B. 170.5 cm, 180.5 cm
C. 171.5 cm, 179.5 cm
D. 172.5 cm, 178.5 cm

Correct Answer: A

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Question 7
Solve the inequality \(\frac{x^2 - 4}{x^2 - 9} > 0\).
Correct A. \(x < -3\) or \(x > 2\)
B. \(-3 < x < 2\)
C. \(x < -3\) or \(2 < x < 3\)
D. \(x > 3\)

Correct Answer: A

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Question 8
Find the sum of the first 10 terms of the geometric series \(\sum_{n=1}^{10} 2^n\).
Correct A. 2047
B. 2048
C. 2049
D. 2050

Correct Answer: A

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Question 9
A vector \(\vec{a}\) has a magnitude of 5 units and makes an angle of 30° with the positive x-axis. Find the x and y components of \(\vec{a}\).
Correct A. \(\vec{a} = 4.33\hat{i} + 2.5\hat{j}\)
B. \(\vec{a} = 4.33\hat{i} - 2.5\hat{j}\)
C. \(\vec{a} = -4.33\hat{i} + 2.5\hat{j}\)
D. \(\vec{a} = -4.33\hat{i} - 2.5\hat{j}\)

Correct Answer: A

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Question 10
Solve the equation \(\sin^2(x) + \cos^2(x) = 1\).
A. \(x = \frac{\pi}{2}\)
Correct B. \(x = \frac{\pi}{4}\)
C. \(x = \frac{3\pi}{4}\)
D. \(x = \frac{5\pi}{4}\)

Correct Answer: B

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Question 11
Find the value of x in the equation \( \log_{10} \( x^2 \ \) = 4 ).
Correct A. 10
B. 100
C. 1000
D. 10000

Correct Answer: A

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Question 12
A circle has a radius of 4 cm. Find the area of the circle.
Correct A. 50.24
B. 100.48
C. 200.96
D. 400.96

Correct Answer: A

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Question 13
A particle moves in a straight line with an initial velocity of 5 m/s. If the acceleration is 2 m/s^2, find the velocity after 3 seconds.
A. 13
B. 15
Correct C. 17
D. 19

Correct Answer: C

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Question 14
A fair six-sided die is rolled. What is the probability that the number rolled is greater than 4?
A. \frac{1}{3}
Correct B. \frac{2}{3}
C. \frac{1}{2}
D. \frac{2}{5}

Correct Answer: B

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Question 15
Solve the inequality \( x^2 - 4x + 4 \geq 0 \).
A. x \leq 2
Correct B. x \geq 2
C. x < 2
D. x > 2

Correct Answer: B

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Question 16
Find the sum of the first 10 terms of the geometric series with first term 2 and common ratio 3.
Correct A. 2 \cdot \frac{3^{10} - 1}{3 - 1}
B. 2 \cdot \frac{3^{11} - 1}{3 - 1}
C. 2 \cdot \frac{3^{9} - 1}{3 - 1}
D. 2 \cdot \frac{3^{8} - 1}{3 - 1}

Correct Answer: A

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Question 17
A circle has equation \( x - 1 \ \)^2 + \( y - 2 \)^2 = 4 ). Find the equation of the \tangent line at point ( (3, 5) ).
Correct A. y - 5 = -\frac{1}{2}\( x - 3 \)
B. y - 5 = \frac{1}{2}\( x - 3 \)
C. y - 5 = \( x - 3 \)
D. y - 5 = -\( x - 3 \)

Correct Answer: A

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Question 18
Find the area under the curve \( y = x^2 \) from \( x = 0 \) to \( x = 4 \).
Correct A. \frac{64}{3}
B. \frac{32}{3}
C. \frac{16}{3}
D. \frac{8}{3}

Correct Answer: A

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Question 19
Solve the system of equations: \( \begin{cases} x + y = 4 \ x - 2y = -3 \end{cases} \).
Correct A. \begin{cases} x = 7 \ y = -3 \end{cases}
B. \begin{cases} x = 1 \ y = 3 \end{cases}
C. \begin{cases} x = 3 \ y = 1 \end{cases}
D. \begin{cases} x = -1 \ y = 5 \end{cases}

Correct Answer: A

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Question 20
Find the determinant of the matrix \( \begin{bmatrix} 1 & 2 & 3 \ 4 & 5 & 6 \ 7 & 8 & 9 \end{bmatrix} \).
Correct A. 0
B. 1
C. 2
D. 3

Correct Answer: A

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Question 21
Find the value of $\int_0^1 \( 2x^3 - 5x^2 + 3x - 1 \) dx$.
A. 1
Correct B. 2
C. 3
D. 4

Correct Answer: B

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Question 22
Solve the inequality $|x - 2| > 3$.
Correct A. \( -∞, -1 \) ∪ (4, ∞)
B. \( -∞, 1 \) ∪ (4, ∞)
C. \( -∞, -1 \) ∪ (1, ∞)
D. \( -∞, 4 \) ∪ (1, ∞)

Correct Answer: A

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Question 23
Find the equation of the \tangent line to the curve $y = x^2 + 2x - 3$ at the point $(1, 2)$.
Correct A. y = 2x - 1
B. y = 2x + 1
C. y = x - 1
D. y = x + 1

Correct Answer: A

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Question 24
Find the area of the region bounded by the curves $y = x^2$ and $y = 2x$.
Correct A. 4/3
B. 2/3
C. 1/3
D. 1/2

Correct Answer: A

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Question 25
Solve the system of equations $x + y = 2$ and $xy = 1$.
Correct A. (1, 1)
B. \( 1, -1 \)
C. \( -1, 1 \)
D. \( -1, -1 \)

Correct Answer: A

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