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 1371: An operation * is defined on the set of real numbers by a * b = ab + 2(a + b + 1). find the identity elements Options:
  A) 2
  B) 1
  C) -1
  D) -2
  Show Answer
  The correct answer is C .
• Question 1372:

  

  The bar chart shows the distribution of marks scored by 60 pupils in a test in which the maximum score was 10. If the pass mark was 5, what percentage of the pupils failed the test?

  Options:
  A) 59.4%
  B) 50.0%
  C) 41.7%
  D) 25.0%
  Show Answer
  The correct answer is C .
• Question 1373: If log₃x² = -8, what is x? Options:
  A) $\frac{1}{3}$
  B) $\frac{1}{9}$
  C) $\frac{1}{27}$
  D) $\frac{1}{81}$
  Show Answer
  The correct answer is D .
• Question 1374: If temperature t is directly proportional to heat h, and when t = 20^oC, h = 50 J, find t when h = 60J Options:
  A) 24^oC
  B) 20^oC
  C) 34^oC
  D) 30^oC
  Show Answer
  The correct answer is A .
• Question 1375:

  The difference between an exterior angle of (n - 1) sided regular polygon and an exterior angle of (n + 2) sided regular polygon is 6${}^o$, then the value of "n" is

  Options:
  A) 11
  B) 13
  C) 12
  D) 14
  Show Answer
  The correct answer is B .
• Question 1376: If log₅20 = x, find x Options:
  A) 1.761
  B) 1.354
  C) 1.861
  D) 2.549
  Show Answer
  The correct answer is C .
• Question 1377:
  

  Which inequality describes the graph above?

  Options:
  A) $4y+5x\ge 20$
  B) $5y+4x\le 20$
  C) $4y+5x\le 20$
  D) $5y+4x\ge 20$
  Show Answer
  The correct answer is B .
• Question 1378:
  

  Find the value of the angle marked x in the diagram above

  Options:
  A) 60${}^0$
  B) 45${}^0$
  C) 90${}^0$
  D) 30${}^0$
  Show Answer
  The correct answer is A .
• Question 1379:

  Simplify $\frac{0.026\times 0.36}{0.69}$. Leave your answer in standard form.

  Options:
  A) 1.36 x 10^-4
  B) 1.36 x 10^-3
  C) 1.36 x 10^-1
  D) 1.36 x 10^-2
  Show Answer
  The correct answer is D .
• Question 1380:

  If y = 23${}_{\text{five}}$ + 101${}_{\text{three}}$, find y, leaving your answer in base two

  Options:
  A) 1110
  B) 10111
  C) 11101
  D) 111100
  Show Answer
  The correct answer is B .