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 1131: 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 1132: Find all real numbers x which satisfy the inequality $\frac{1}{3}$(x + 1) - 1 > $\frac{1}{5}$(x + 4)
  Options:
  A) x < 11
  B) x < -1
  C) x > 6
  D) x > 11
  Show Answer
  The correct answer is D .
• Question 1133:

  Below are the scores of group of students in a music test:

  $\begin{array}{cccccccccc}\text{Scores}& 1& 2& 3& 4& 5& 6& 7& 8& 9\\ \text{No of students}& 3& 6& 10& 8& 6& 5& 2& 4& 12\end{array}$

  If CF(x) is the number of students with scores less than or equal to x, find CF(6)

  Options:
  A) 40
  B) 38
  C) 33
  D) 5
  Show Answer
  The correct answer is B .
• Question 1134: If Cos $\theta$ = $\frac{12}{13}$. Find $\theta$ + cos²$\theta$ Options:
  A) $\frac{169}{25}$
  B) $\frac{25}{169}$
  C) $\frac{169}{144}$
  D) $\frac{144}{169}$
  Show Answer
  The correct answer is A .
• Question 1135: Correct 241.34(3 x 10^-3)² to 4 significant figures Options:
  A) 0.0014
  B) 0.001448
  C) 0.0022
  D) 0.002172
  Show Answer
  The correct answer is D .
• Question 1136: Multiply x² + x + 1 by x² - x + 1 Options:
  A) x⁴ - x + x²
  B) x⁴ - x² + x²
  C) x⁴ + x² + 1
  D) x⁴ + x²
  Show Answer
  The correct answer is C .
• Question 1137: A cylindrical pipe 50cm long with radius 7m has one end open. What is the total surface area of the pipe? Options:
  A) 749$\pi$m²
  B) 700$\pi$m²
  C) 350$\pi$m²
  D) 98$\pi$m²
  Show Answer
  The correct answer is A .
• Question 1138:

  Evaluate $\frac{12.02\times 20.06}{26.04\times 60.06}$, correct to three significant figures.

  Options:
  A) 0.157
  B) 0.154
  C) 0.155
  D) 0.158
  Show Answer
  The correct answer is B .
• Question 1139: ($\sqrt{2}+4\sqrt{2}$) ($\sqrt{3}+\sqrt{2}$) ($\sqrt{3}+\sqrt{2}$) is equal to Options:
  A) 1
  B) ($\sqrt{2}+4\sqrt{2}$)
  C) (6$\sqrt{2}$
  D) 8
  Show Answer
  The correct answer is A .
• Question 1140:

  In how many ways can 2 students be selected from a group of 5 students in a debating competition?

  Options:
  A) 25 ways
  B) 10 ways
  C) 15 ways
  D) 20 ways
  Show Answer
  The correct answer is B .