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 1451: If b = a + cp and r = ab + $\frac{1}{2}$cp², express b² in terms of a, c, r. Options:
  A) b² = aV + 2cr
  B) b² = ar + 2c²r
  C) b² = a² = $\frac{1}{2}$ cr²
  D) b² = $\frac{1}{2}$ar² + c
  E) b² = 2cr - a²
  Show Answer
  The correct answer is E .
• Question 1452: For what value of x does 6 sin (2x - 25)^o attain its maximum value in the range 0^o $\le$ x $\le$ 180^o Options:
  A) 12$\frac{1}{2}$
  B) 32$\frac{1}{2}$
  C) 57$\frac{1}{2}$
  D) 147$\frac{1}{2}$
  Show Answer
  The correct answer is C .
• Question 1453: In how many ways can the letters of the word ACCEPTANCE be arranged? Options:
  A) 10! / (2!2!3!)
  B) 10! / ( 2!3!)
  C) 10! / (2!2!)
  D) 10!
  Show Answer
  The correct answer is A .
• Question 1454: Twenty girls and y boys sat on an examination. The mean marks obtained by the girls and boys were 52 and 57 respectively. if the total score for both girls and boys was 2950, find y. Options:
  A) 51
  B) 48
  C) 30
  D) 25
  E) 18
  Show Answer
  The correct answer is C .
• Question 1455: The 4th term of a G.P is 3 and its first term is 81. What is its common ratio? Options:
  A) 3
  B) $\frac{2}{3}$
  C) $\frac{1}{3}$
  D) -$\frac{1}{3}$
  E) -3
  Show Answer
  The correct answer is C .
• Question 1456: What is the product of 2x² − x + 1 and 3 − 2x Options:
  A) 4x³ − 8x² + 5x + 3
  B) −4x³ + 8x² − 5x + 3
  C) −4x³ − 8x² + 5x + 3
  D) 4x³ + 8x² − 5x + 3
  Show Answer
  The correct answer is B .
• Question 1457: Given m = N$\frac{\sqrt{SL}}{T}$ make T the subject of the formula Options:
  A) $\frac{\text{NSL}}{M}$
  B) $\frac{N^{2}SL}{M^2}$
  C) $\frac{N^{2}SL}{M}$
  D) $\frac{NSL}{M^2}$
  Show Answer
  The correct answer is B .
• Question 1458: Find the value of k such that $t^2$ + kt + $\frac{25}{4}$ is a perfect square Options:
  A) 5
  B) 3
  C) $\frac{5}{2}$
  D) $\frac{5}{4}$
  E) $\frac{1}{5}$
  Show Answer
  The correct answer is A .
• Question 1459:

  

  Use the cumulative frequency curve to answer the question.
  What is the 80th percentile?

  Options:
  A) 45.5
  B) 46.5
  C) 47.5
  D) 48.5
  Show Answer
  The correct answer is C .
• Question 1460: If two angles of a triangle are 30^o each and the longest side is 10cm. Calculate the length of each of the other sides Options:
  A) 5cm
  B) 4cm
  C) 3√3 cm
  D) 10$\frac{3}{3}$cm
  Show Answer
  The correct answer is D .