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 1511: Two similar cylindrical cans have heights of 7cm and 21cm, if the smaller holds 250g of sugar, how many kg of sugar will the larger one hold? Options:
  A) 0.75
  B) 1.5
  C) 2.25
  D) 3.5
  E) 6.75
  Show Answer
  The correct answer is E .
• Question 1512: If S = (x : x² = 9, x > 4), then S is equal to Options:
  A) 4
  B) {0}
  C) $\oplus$
  D) {$\oplus$}
  Show Answer
  The correct answer is C .
• Question 1513: A man is paid r naira per hour for normal work and double rate for overtime. if he does a 35-hour week which includes q hours of overtime, what is his weekly earning in naira? Options:
  A) r(35 + q)
  B) q(35r - q)
  C) q(35 + r)
  D) r(35 + 2q)
  Show Answer
  The correct answer is D .
• Question 1514:

  Solve for x in $\frac{4x-6}{3}\le \frac{3+2x}{2}$

  Options:
  A) $x\le 1\frac{1}{2}$
  B) $x\le \frac{21}{2}$
  C) $x\ge \frac{21}{2}$
  D) $x\ge 1\frac{1}{2}$
  Show Answer
  The correct answer is B .
• Question 1515:

  

  In the figure, the area of the square of the square PQRS is 100cm². If the ratio of the area of the square TUYS to the area of the area of the square XQVU is 1 : 16, Find YR

  Options:
  A) 6cm
  B) 7cm
  C) 8cm
  D) 9cm
  Show Answer
  The correct answer is C .
• Question 1516: If cos $\theta$ = $\frac{x}{y}$, find cosec$\theta$ Options:
  A) $\frac{1}{y}$(x² + y²)
  B) $\frac{x}{y}$
  C) $\frac{1}{y}$$\sqrt{x^2+y^2}$
  D) $\frac{x-y}{y}$
  Show Answer
  The correct answer is C .
• Question 1517: Find, without using logarithm tables, the value of $\frac{lo{g}_{3}27-lo{g}_{\frac{1}{4}}64}{lo{g}_3\frac{1}{81}}$ Options:
  A) $\frac{-3}{9}$
  B) $\frac{-3}{2}$
  C) $\frac{6}{11}$
  D) $\frac{43}{78}$
  Show Answer
  The correct answer is B .
• Question 1518: Make R the subject of the formula if T = $\frac{K{R}^2+M}{3}$ Options:
  A) $\sqrt{\frac{3T-K}{M}}$
  B) $\sqrt{\frac{3T-M}{K}}$
  C) $\sqrt{\frac{3T+K}{M}}$
  D) $\sqrt{\frac{3T-K}{M}}$
  Show Answer
  The correct answer is B .
• Question 1519:

  

  PQRS is a cyclic quadrilateral which PQ = PS. PT is a tangent to the circle and PQ makes an angle of 50${}^{\circ }$ with the tangent as shown in the figure. What is the size of QRS?

  Options:
  A) 50${}^{\circ }$
  B) 40${}^{\circ }$
  C) 110v
  D) 80${}^{\circ }$
  E) 100${}^{\circ }$
  Show Answer
  The correct answer is E .
• Question 1520: The positive root of t in the following equation, 4t² + 7t - 1$\pi$ = 0, correct to 4 places of decimal, is Options:
  A) 1.0622
  B) 10.6225
  C) 0.1328
  D) 0.3218
  E) 2.0132
  Show Answer
  The correct answer is C .