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 511: If y = x cosx, find $\frac{dy}{dx}$. Options:
  A) cos x - x sinx
  B) sinx - x cosx
  C) sin x + x cosx
  D) cosx + x sin x
  Show Answer
  The correct answer is A .
• Question 512:

  Solve for x in $\frac{4x-6}{3}\le \frac{3+2x}{2}$

  Options:
  A) $x\le 1\frac{1}{2}$
  B) $x\le \frac{21}{2}$
  C) $x\ge \frac{21}{2}$
  D) $x\ge 1\frac{1}{2}$
  Show Answer
  The correct answer is B .
• Question 513: Find the positive value of x if the standard deviation of the numbers 1, x + 1 is 6 Options:
  A) 1
  B) 2
  C) 3
  D) 4
  Show Answer
  The correct answer is C .
• Question 514: Find the range of the value of x satisfying the inequalities 5 + x $\le$ 8 and 13 + x $\ge$ 7 Options:
  A) -3 $\le$ x $\le$ 3
  B) 3 $\le$ x $\le$ 6
  C) -6 $\le$ x $\le$ 3
  D) -6 $\le$ x $\le$ -3
  Show Answer
  The correct answer is C .
• Question 515: Solve for x, If $\frac{\frac{2}{x}}{\frac{p^2+p^2}{p^2+p^2}}$ = m Options:
  A) $\frac{4pq}{m(p+q)}$
  B) $\frac{2p^2{q}^2}{m(q^2+p^2)}$
  C) $\frac{2pq}{m(q^2+p^2)}$
  D) $\frac{2p^2{q}^2}{m(p^2)}$
  Show Answer
  The correct answer is B .
• Question 516:

  Solve the following quadratic inequality: $x^2-x$ - 4 ≤ 2

  Options:
  A) $-3<x<2$
  B) $-2\le x\le 3$
  C) $x\le -2,x\le 3$
  D) $-2<x<3$
  Show Answer
  The correct answer is B .
• Question 517: The gradient of a line joining (x,4) and (1,2) is $\frac{1}{2}$. Find the value of x Options:
  A) 5
  B) 3
  C) -3
  D) -5
  Show Answer
  The correct answer is A .
• Question 518: The sum of four consecutive integers is 34. Find the least of these numbers Options:
  A) 7
  B) 6
  C) 8
  D) 5
  Show Answer
  The correct answer is A .
• Question 519:

  Find the area bounded by the curves y = 4 - x² and y = 2x + 1

  Options:
  A) 20(1/3) sq. units
  B) 20(2/3) sq. units
  C) 10(2/3) sq. units
  D) 10(1/3) sq. units
  Show Answer
  The correct answer is C .
• Question 520: A number is selected at random between 10 and 20, both numbers inclusive. Find the probability that the number is an even number Options:
  A) $\frac{5}{11}$
  B) $\frac{1}{2}$
  C) $\frac{6}{11}$
  D) $\frac{7}{10}$
  Show Answer
  The correct answer is C .