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 501: Find the non-zero positive value of x which satisfies the equation $\left|\begin{array}{ccc}x& 1& 0\\ 1& x& x\\ 0& 1& x\end{array}\right|$ = 0 Options:
  A) 2
  B) 4
  C) √3
  D) √2
  E) 1
  Show Answer
  The correct answer is A .
• Question 502: The diameter of a metal rod is measured as 23.40cm to four significant figures. What is the maximum error in the measurement?
  Options:
  A) 0.05cm
  B) 0.5cm
  C) 0.045cm
  D) 0.005cm
  E) 0.004cm
  Show Answer
  The correct answer is D .
• Question 503:

  

  In the figure, PQr is a semicircle while PQ and Qr are chords. QS is the perpendicular from Q to the diameter PR. What is the expression for QS?

  Options:
  A) QS = PS$\sqrt{SR}$
  B) QS = $\sqrt{(PSSR)}$
  C) QS = 2$\sqrt{(PSSR)}$
  D) QS = $\frac{1}{\sqrt{2}}$$\sqrt{(PSSR)}$
  Show Answer
  The correct answer is B .
• Question 504: A man and wife went to buy an article costing ₦400. The woman had 10% of the cost and the man 40% of the remainder. How much did they have altogether? Options:
  A) ₦216
  B) ₦200
  C) ₦184
  D) ₦144
  E) ₦100
  Show Answer
  The correct answer is C .
• Question 505: If P = $\sqrt{\frac{r{s}^3}{t}}$, express r in terms of p, s and t. Options:
  A) $\frac{p^{2}t}{s^3}$
  B) $\frac{p^{3}t}{s^3}$
  C) $\frac{p^{3}t}{s^2}$
  D) $\frac{pt}{s^3}$
  Show Answer
  The correct answer is A .
• Question 506: The ratio of the length of two similar rectangular blocks is 2 : 3. If the volume of the larger block is 351cm³, then the volume of the other block is Options:
  A) 234.00 cm³
  B) 526.50 cm³
  C) 166.00 cm³
  D) 687cm³
  Show Answer
  The correct answer is A .
• Question 507: If the 9th term of an A.P is five times the 5th term, find the relationship between a and d. Options:
  A) 2a + 2 = 0
  B) 3a + 5d = 0
  C) a + 3d = 0
  D) a + 2d = 0
  Show Answer
  The correct answer is C .
• Question 508:

  

  From the diagram above, find x

  Options:
  A) 65${}^{\circ }$
  B) 50${}^{\circ }$
  C) 75${}^{\circ }$
  D) 55${}^{\circ }$
  Show Answer
  The correct answer is A .
• Question 509: In a youth club with 94 members, 60 like modern music, and 50 like traditional music. The number of members who like both traditional and modern music is three times those who do not like any type of music. How many members like only one type of music? Options:
  A) 8
  B) 24
  C) 62
  D) 86
  Show Answer
  The correct answer is C .
• Question 510:

  find the range of values of values of r which satisfies the following inequality, where a, b and c are positive $\frac{r}{a}$ + $\frac{r}{b}$ + $\frac{r}{c}$ > 1

  Options:
  A) r > $\frac{abc}{bc+ac+ab}$
  B) r < abc
  C) r > $\frac{1}{a}$ + $\frac{1}{b}$ + $\frac{1}{c}$
  D) r < $\frac{1}{abc}$
  Show Answer
  The correct answer is A .