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 821:

  The following table relates the number of objects f corresponding to a certain size x. What is the average size of an object?

  $\begin{array}{cccccc}f& 1& 2& 3& 4& 5\\ x& 1& 2& 4& 8& 16\end{array}$

  Options:
  A) $\frac{31}{15}$
  B) $\frac{31}{5}$
  C) $\frac{129}{5}$
  D) $\frac{43}{5}$
  E) $\frac{16}{5}$
  Show Answer
  The correct answer is D .
• Question 822: If $\sqrt{x^2+9}$ = x + 1, solve for x Options:
  A) 5
  B) 4
  C) 3
  D) 2
  E) 1
  Show Answer
  The correct answer is B .
• Question 823: Evaluate without using tables (0.008) -$\frac{1}{3}$ x (0.16) - $\frac{3}{2}$ Options:
  A) $\frac{625}{8}$
  B) $\frac{8}{625}$
  C) $\frac{1}{8}$
  D) 8
  Show Answer
  The correct answer is A .
• Question 824: Find the sum of the range and the mode of the set of numbers 10, 9, 10, 9, 8, 7, 7, 10, 8, 10, 8, 4, 6, 9, 10, 9, 10, 9, 7, 10, 6, 5 Options:
  A) 16
  B) 14
  C) 12
  D) 10
  Show Answer
  The correct answer is A .
• Question 825:

  

  In the parallelogram PQRS, PE is perpendicular to QR. Find the area of the parallelogram.

  Options:
  A) 60cm²
  B) 65cm²
  C) 72cm²
  D) 144cm²
  E) 156cm²
  Show Answer
  The correct answer is D .
• Question 826: A final examination requires that a student answer any 4 out of 6 questions. In how many ways can this be done? Options:
  A) 15
  B) 20
  C) 30
  D) 45
  Show Answer
  The correct answer is A .
• Question 827: Evaluate (2.813 x 10^-3 x 1.063) (5.637 x 10^-2) Options:
  A) 0.056
  B) 0.055
  C) 0.054
  D) 0.54
  Show Answer
  The correct answer is B .
• Question 828:

  A binary operation on the set of real numbers excluding -1 is such that sor all m, n $\epsilon$ R, m $\mathrm{\Delta }$ n = m + n + mn. Find the identity element of the operation.

  Options:
  A) 1
  B) -$\frac{1}{2}$
  C) -1
  D) 0
  Show Answer
  The correct answer is D .
• Question 829:

  A man stands on a tree 150cm high and sees a boat at an angle of depression of 74°. Find the distance of the boat from the base of the tree.

  Options:
  A) 52cm
  B) 43cm
  C) 40cm
  D) 15cm
  Show Answer
  The correct answer is B .
• Question 830: If two smaller sides of a right angled triangle are 4cm and 5cm, find its area Options:
  A) 10 cm²
  B) 6 cm²
  C) 24 cm²
  D) 8 cm²
  Show Answer
  The correct answer is A .