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 1681: If a rod of length 250cm is measured as 255cm long in error, what is the percentage error in the measurement? Options:
  A) 55
  B) 10
  C) 5
  D) 4
  E) 2
  Show Answer
  The correct answer is E .
• Question 1682:

  Find the value of t, if the distance between the points P(3, 14) and Q(t, 5) is 9 units.

  Options:
  A) 3
  B) 2
  C) - 3
  D) - 2
  Show Answer
  The correct answer is C .
• Question 1683:

  

  Find the inequality which represents the shaded portion in the diagram

  Options:
  A) 2x - y - 2 $\ge$ 0
  B) 2x - y - 2 $\le$ 0
  C) 2x - y - 2 < 0
  D) 2x - y - 2 > 0
  Show Answer
  The correct answer is A .
• Question 1684: If U = (s, p, i, e, n, d, o, u, r), X = (s, p, e, n, d) Y = (s, e, n, o, u), Z = (p, n, o, u, r) find X ∩ Y ∪ Z Options:
  A) (p, o, u, r)
  B) (s, p, d, r)
  C) (p, n, d)
  D) (n, d, u)
  Show Answer
  The correct answer is C .
• Question 1685: The binary operation $\oplus$ is defined by x $\ast$ y = xy - y - x for all real values x and y. If x $\ast$ 3 = 2$\ast$, find x Options:
  A) -1
  B) 4
  C) 1
  D) 5
  Show Answer
  The correct answer is C .
• Question 1686: What is the value of x satisfying the equation $\frac{4^{2x}}{4^{3x}}$ = 2? Options:
  A) -2
  B) -$\frac{1}{2}$
  C) $\frac{1}{2}$
  D) 2
  Show Answer
  The correct answer is B .
• Question 1687: The expression ax² + bx + c equals 5 at x = 1. If its derivative is 2x + 1, what are the values of a, b, c respectively? Options:
  A) 1, 3, 1
  B) 1, 2, 1
  C) 2, 1, 1
  D) 1, 1, 3
  Show Answer
  The correct answer is D .
• Question 1688: What is the number whose logarithm to base 10 is 2.3482? Options:
  A) 223
  B) 2228
  C) 2.235
  D) 22.37
  E) 0.2229
  Show Answer
  The correct answer is E .
• Question 1689: The probability of an event P is $\frac{3}{4}$ while that of another event Q is $\frac{1}{6}$. If the probability of both P and Q is $\frac{1}{2}$. What is the probability of either P or Q. Options:
  A) $\frac{1}{96}$
  B) $\frac{1}{8}$
  C) $\frac{5}{6}$
  D) $\frac{11}{12}$
  Show Answer
  The correct answer is C .
• Question 1690: A binary operation * is defined by a*b = a^b. If a*2 = 2-a, find the possible values of a. Options:
  A) 1, -1
  B) 1, 2
  C) 2, -2
  D) 1, -2
  Show Answer
  The correct answer is D .