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 2271: Factorize completely the expression abx² + 6y - 3ax - 2byx Options:
  A) (ax - 2y)(bx - 3)
  B) (bx + 3)(2y - ax)
  C) (bx + 3)(ax - 2y)
  D) (ax - 2y)(ax - b)
  Show Answer
  The correct answer is A .
• Question 2272:

  $\begin{array}{cccccc}\text{Values}& 0& 1& 2& 3& 4\\ \text{Frequency}& 1& 2& 2& 1& 9\end{array}$

  Find the mode of the distribution above

  Options:
  A) 1
  B) 2
  C) 3
  D) 4
  Show Answer
  The correct answer is D .
• Question 2273: Find the number of sides of a regular polygon whose interior angle is twice the exterior angle. Options:
  A) 6
  B) 2
  C) 3
  D) 8
  Show Answer
  The correct answer is A .
• Question 2274: If (K2)₆ * 3₆ = 3₅(K4)₅, what is the value of k? Options:
  A) 1
  B) 4
  C) 3
  D) 2
  Show Answer
  The correct answer is D .
• Question 2275: Find the mean deviation of the set of numbers 4, 5, 9 Options:
  A) zero
  B) 2
  C) 5
  D) 6
  Show Answer
  The correct answer is B .
• Question 2276:

  If $\left|\begin{array}{lll}2& -5& 3\\ x& 1& 4\\ 0& 3& 2\end{array}\right|=132$, find the value of x.

  Options:
  A) 5
  B) 8
  C) 6
  D) 3
  Show Answer
  The correct answer is B .
• Question 2277:

  $\begin{array}{ccccccc}\text{Numbers}& 1& 2& 3& 4& 5& 6\\ \text{Frequency}& 18& 22& 20& 16& 10& 14\end{array}$

  The table above represents the outcome of throwing a die 100 times. What is the probability of obtaining at least a 4?

  Options:
  A) $\frac{1}{5}$
  B) $\frac{1}{2}$
  C) $\frac{2}{5}$
  D) $\frac{3}{4}$
  Show Answer
  The correct answer is C .
• Question 2278: A particle P moves between points S and T such that angles SPT is always constant of ST constant. Find the locus off P Options:
  A) It is a semi circle with ST as diameter
  B) It is a perpendicular bisector of St
  C) It is a quadrant of a circle with ST as diameter
  D) It is a straight line perpendicular to ST
  Show Answer
  The correct answer is A .
• Question 2279: A binary operation $\mathrm{\Delta }$ is defined is defined by a $\mathrm{\Delta }$ b = a + b + 1 for any real numbers a and b. Find the inverse of the real number 7 under the operation $\mathrm{\Delta }$, if the identify element is -1 Options:
  A) -1
  B) 5
  C) -7
  D) -9
  E) 9
  Show Answer
  The correct answer is D .
• Question 2280: A cuboid has a diagonal of length 9cm and a square base of side 4cm. What is its height? Options:
  A) 9cm
  B) 65cm
  C) 42cm
  D) 7cm
  E) 6.5cm
  Show Answer
  The correct answer is D .