Mathematics Exam Past Questions and Answers | JAMB, WAEC and NECO

Mathematics looks at measurement, relationships, and properties of numbers and groups using numbers and symbols. Important topics in math include arithmetic, algebra, geometry, and calculus.

• Question 1231: Solve the inequality x² + 2x > 15.
  Options:
  A) x < -3 or x > 5
  B) -5 < x < 3
  C) x < 3 or x > 5
  D) x > 3 or x < -5
  Show Answer
  The correct answer is D .
• Question 1232:

  If $f(x)=3x^3+4x^2+x-8$, what is the value of f(-2)?

  Options:
  A) -24
  B) 30
  C) -18
  D) -50
  Show Answer
  The correct answer is C .
• Question 1233: Solve the equation cos x + sin x $\frac{1}{cosx-sinx}$ for values of such that 0 $\le$ x < 2$\pi$. Options:
  A) $\frac{\pi }{2}$, $\frac{3\pi }{2}$
  B) $\frac{\pi }{3}$, $\frac{2\pi }{3}$
  C) 0, $\frac{\pi }{3}$
  D) 0, $\pi$
  Show Answer
  The correct answer is D .
• Question 1234: What is the solution of $\frac{x-5}{x+3}<-1$? Options:
  A) -3 < x < 1
  B) x 1
  C) -3 < x < 5
  D) x 5
  Show Answer
  The correct answer is A .
• Question 1235: Find the mean of the data: 7, -3, 4, -2, 5, -9, 4, 8, -6, 12 Options:
  A) 3
  B) 4
  C) 1
  D) 2
  Show Answer
  The correct answer is D .
• Question 1236: The 4th term of an A.P. is 13 while the 10th term is 31. Find the 21st term. Options:
  A) 175
  B) 85
  C) 64
  D) 45
  Show Answer
  The correct answer is C .
• Question 1237: A binary operation $\oplus$ is defines on the set of all positive integers by a $\oplus$ b = ab for all positive integers a, b. Which of the following properties does NOT hold? Options:
  A) closure
  B) identity
  C) positive
  D) inverse
  Show Answer
  The correct answer is D .
• Question 1238: For what value of x does 6 sin (2x - 25)^o attain its maximum value in the range 0^o $\le$ x $\le$ 180^o Options:
  A) 12$\frac{1}{2}$
  B) 32$\frac{1}{2}$
  C) 57$\frac{1}{2}$
  D) 147$\frac{1}{2}$
  Show Answer
  The correct answer is C .
• Question 1239: If the surface area of a sphere increased by 44%, find the percentage increase in diameter Options:
  A) 44
  B) 30
  C) 22
  D) 20
  Show Answer
  The correct answer is D .
• Question 1240: The chances of three independent events X, Y, Z occurring are $\frac{1}{2}$, $\frac{2}{3}$, $\frac{1}{4}$ respectively. What are the chances of Y and Z only occurring? Options:
  A) $\frac{1}{8}$
  B) $\frac{1}{24}$
  C) $\frac{1}{12}$
  D) $\frac{1}{4}$
  Show Answer
  The correct answer is C .