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 1141:

  The angle of elevation of the top of a tree from a point on the ground 60m away from the foot of the tree is 78°. Find the height of the tree correct to the nearest whole number.

  Options:
  A) 148m
  B) 382m
  C) 282m
  D) 248m
  Show Answer
  The correct answer is C .
• Question 1142:

  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 1143: In the diagram above, PQ//Rs. The size of the angle marked x is Options:
  A) 100${}^{\circ }$
  B) 80${}^{\circ }$
  C) 50${}^{\circ }$
  D) 30${}^{\circ }$
  Show Answer
  The correct answer is B .
• Question 1144:

  $\begin{array}{cccccccc}\text{Marks}& 2& 3& 4& 5& 6& 7& 8\\ \text{No. of students}& 3& 1& 5& 2& 4& 2& 3\end{array}$

  From the table above, if the pass mark is 5, how many students failed the test?

  Options:
  A) 6
  B) 2
  C) 9
  D) 7
  Show Answer
  The correct answer is C .
• Question 1145: The ratio of the base area of a hollow cone to that of its curved surface is 1:4. If its base radius is 7cm, calculate the slant height of the cone Options:
  A) 7cm
  B) 22cm
  C) 28cm
  D) 49cm
  E) 154cm
  Show Answer
  The correct answer is C .
• Question 1146:

  It takes 12 men 8 hours a day to finish a piece of work in 4 days. In how many days will it take 4 men working 16 hours a day to complete the same piece of work?

  Options:
  A) 6 days
  B) 8 days
  C) 10 days
  D) 12 days
  Show Answer
  The correct answer is A .
• Question 1147: If y = 3 cos 4x, $\frac{dy}{dx}$ equals Options:
  A) 6 sin 8x
  B) -24 sin 4x
  C) 12 sin 4x
  D) -12 sin 4x
  Show Answer
  The correct answer is D .
• Question 1148: If x₁₀ = 23₅. Find x Options:
  A) 15
  B) 12
  C) 14
  D) 13
  Show Answer
  The correct answer is D .
• Question 1149: The gradient of a curve is 2x + 7 and the curve passes through point (2, 0). find the equation of the curve. Options:
  A) y = x² + 7x + 9
  B) y = x² + 7x - 18
  C) y = x² + 7x + 18
  D) y = x² + 14x + 11
  Show Answer
  The correct answer is B .
• Question 1150: What is the probability that a number chosen at random from the intergers between 1 and 10 inclusive is either a prime or a multiple of 3? Options:
  A) $\frac{7}{10}$
  B) $\frac{3}{5}$
  C) $\frac{4}{5}$
  D) $\frac{3}{10}$
  Show Answer
  The correct answer is B .