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 1091: Simplify T = $\frac{4R_2}{R_1^{-1}+R_2^{-1}+4R_3^{-1}}$ Options:
  A) $\frac{4R_1\times R_2{R}_3}{R_2{R}_3+R_1{R}_3+4R_1{R}_2}$
  B) $\frac{R_1{R}_2{R}_3}{R_2{R}_3+R_1{R}_2+4R_1{R}_2}$
  C) $\frac{16R_1{R}_2{R}_3}{R_2{R}_3+R_1{R}_2+R_1{R}_2}$
  D) $\frac{4R_1{R}_2{R}_3}{4R_2{R}_3+R_1{R}_2+4R_1{R}_2}$
  Show Answer
  The correct answer is A .
• Question 1092:

  A binary operation Δ is defined by a Δ b = a + 3b + 2.

  Find (3 Δ 2) Δ 5

  Options:
  A) 35
  B) 59
  C) 28
  D) 87
  Show Answer
  The correct answer is C .
• Question 1093:

  

  In the diagram above, PQR is a circle centre O. If < QPR is XO, find < QRP.

  Options:
  A) x^o
  B) (90 – x)^o
  C) (90 + x)^o
  D) (180 – x)^o
  Show Answer
  The correct answer is B .
• Question 1094: In a school, there are 35 students in class 2A and 40 in class 2B. The mean score for class 2 in an English Literature examination is 60.0 and that for 2B in the same paper is 52.5. Find, to one place of decimal, the mean for the combined classes Options:
  A) 2.5
  B) 56.0
  C) 56.2
  D) 56.3
  E) 6.5
  Show Answer
  The correct answer is B .
• Question 1095:

  

  The result of rolling a fair die 150 times is ass summarized in the table above. What is the probability of obtaining a 5

  Options:
  A) ³/₁₀
  B) ¹/₅
  C) ¹/₆
  D) ¹/₁₀
  Show Answer
  The correct answer is B .
• Question 1096: The minimum value of $y$ in the equation $y=x^2-6x+8$ Options:
  A) 8
  B) 3
  C) -1
  D) 5
  Show Answer
  The correct answer is D .
• Question 1097: Find the minimum value of y = x² - 2x - 3 Options:
  A) 4
  B) 1
  C) -1
  D) -4
  Show Answer
  The correct answer is D .
• Question 1098: If y = 3 cos(x/3), find dy/dx when x = (3π/2) Options:
  A) 1
  B) -3
  C) 2
  D) -1
  Show Answer
  The correct answer is D .
• Question 1099: What is the n-th term of the sequence 2, 6, 12, 20...? Options:
  A) 4n - 2
  B) 2(3^{n - 1})
  C) n² + n
  D) n² + 3n + 2
  Show Answer
  The correct answer is C .
• Question 1100: Solve x² − 2x − 3 = 0 Options:
  A) x = 2 or 1
  B) x = 3 or -1
  C) x = 1 or 0
  D) x = 1 or 2
  Show Answer
  The correct answer is B .