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 611: A cliff on the bank of a river is 300 meter high. if the angle of depression of a point on the opposite side of the river is 60${}^{\circ }$, find the width of the river. Options:
  A) 100m
  B) 75√3 m
  C) 100√3m
  D) 200√3m
  Show Answer
  The correct answer is C .
• Question 612:

  $\begin{array}{ccccc}\oplus mod10& 2& 4& 6& 8\\ 2& 4& 8& 2& 6\\ 4& 8& 6& 4& 2\\ 4& 8& 6& 4& 2\\ 6& 2& 4& 6& 8\\ 8& 6& 2& 8& 4\end{array}$

  The multiplication table above has modulo 10 on the set S = (2, 4, 6, 8). Find the inverse of 2

  Options:
  A) 2
  B) 4
  C) 6
  D) 8
  Show Answer
  The correct answer is A .
• Question 613: A pipe made of metal 10cm thick has an external radius of 11cm. find the area of metal in making 2.4cm of pipe Options:
  A) 21πcm²
  B) 21πcm²
  C) 15πcm²
  D) 17πcm²
  Show Answer
  The correct answer is B .
• Question 614: In how many ways can a delegation of 3 be chosen from 5 men and 3 women. If at least 1 man and 1 woman must be included? Options:
  A) 15
  B) 28
  C) 30
  D) 45
  Show Answer
  The correct answer is D .
• Question 615: A man bought a car for ₦800 and sold it for ₦520. Find his loss per cent Options:
  A) 15%
  B) 25%
  C) 35%
  D) 10%
  Show Answer
  The correct answer is C .
• Question 616: Find the inverse $\left|\begin{array}{cc}5& 3\\ 6& 4\end{array}\right|$ Options:
  A) $\left|\begin{array}{cc}2& -\frac{3}{2}\\ -3& -\frac{5}{2}\end{array}\right|$
  B) $\left|\begin{array}{cc}2& -\frac{3}{2}\\ -3& \frac{5}{2}\end{array}\right|$
  C) $\left|\begin{array}{cc}2& \frac{3}{2}\\ -3& \frac{5}{2}\end{array}\right|$
  D) $\left|\begin{array}{cc}2& \frac{3}{2}\\ -3& \frac{5}{2}\end{array}\right|$
  Show Answer
  The correct answer is B .
• Question 617:

  An article when sold for ₦230.00 makes a 15% profit. Find the profit or loss % if it was sold for ₦180.00

  Options:
  A) 10% gain
  B) 10% loss
  C) 12% loss
  D) 12% gain
  Show Answer
  The correct answer is B .
• Question 618: Evaluate ∫2(2x-3)^2/3dx Options:
  A) 3/5(2x-3)^5/3 + k
  B) 6/5(2x-3)^5/3 + k
  C) 2x-3+k
  D) 2(2x-3)+k
  Show Answer
  The correct answer is A .
• Question 619: A construction company is owned by two partners X and Y and it is agreed that their profit will be divided in the ratio 4:5. At the end of the year, Y received ₦5,000 more than X. What is the total profit of the company for the year? Options:
  A) ₦20, 000
  B) ₦25,000
  C) ₦30,000
  D) ₦15,000
  E) ₦45, 000
  Show Answer
  The correct answer is E .
• Question 620:

  $\begin{array}{ccccccc}\text{Age}& 20& 25& 30& 35& 40& 45\\ \text{Number of people}& 3& 5& 1& 1& 2& 3\end{array}$

  Find the median age of the frequency distribution in the table above.

  Options:
  A) 20
  B) 25
  C) 30
  D) 35
  Show Answer
  The correct answer is B .