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 721:

  Find the total surface area of a cylinder of base radius 5cm and length 7cm (π = 3.14)

  Options:
  A) 219.9cm²
  B) 157.1cm²
  C) 377.0cm²
  D) 298.7cm²
  Show Answer
  The correct answer is C .
• Question 722:

  Solve the logarithmic equation: $lo{g}_2(6-x)=3-lo{g}_{2}x$

  Options:
  A) $x$ = 4 or 2
  B) $x$ = -4 or -2
  C) $x$ = -4 or 2
  D) $x$ = 4 or -2
  Show Answer
  The correct answer is A .
• Question 723: Factorize 6x² - 14x - 12 Options:
  A) 2(x + 3)(3x - 2)
  B) 6(x - 2)(x + 1)
  C) 2(x - 3)(3x + 2)
  D) 6(x + 2)(x - 1)
  E) (3x - 4)(2x + 3)
  Show Answer
  The correct answer is C .
• Question 724: A man bought wrist watch for ₦150 but was only able to sell it for ₦120. Find the loss per cent on the transaction Options:
  A) 25%
  B) 11%
  C) 20%
  D) 80%
  E) 30%
  Show Answer
  The correct answer is C .
• Question 725:

  A cylinder pipe, made of metal is 3cm thick.If the internal radius of the pipe is 10cm.Find the volume of metal used in making 3m of the pipe.

  Options:
  A) 153$\pi$cm³
  B) 207$\pi$cm³
  C) 15 300$\pi$cm³
  D) 20 700$\pi$cm³
  Show Answer
  The correct answer is D .
• Question 726:

  

  The table above shows the scores of a group of students in a physics test. If the mode is m and the number of students who scored 4 or more is n, what is (n, m)?

  Options:
  A) (33, 4)
  B) (22, 4)
  C) (33, 12)
  D) (12, 4)
  Show Answer
  The correct answer is A .
• Question 727:

  p = $\left|\begin{array}{ccc}x& 3& 0\\ 2& y& 3\\ 4& 2& 4\end{array}\right|$

  q = $\left|\begin{array}{ccc}x& 2& z\\ 3& y& 2\\ 0& 3& z\end{array}\right|$ Where p^T is the transpose p calculate /p^T/ when x = 0, y = 1 and z = 2

  Options:
  A) 48
  B) 24
  C) -24
  D) -48
  Show Answer
  The correct answer is B .
• Question 728: Rationalize the denominator of the expression $\frac{6+2\sqrt{5}}{4-3\sqrt{6}}$ Options:
  A) $\frac{12+4\sqrt{5+7}5+6\sqrt{3}}{39}$
  B) $\frac{-24+18\sqrt{6+8}5+6\sqrt{30}}{39}$
  C) $\frac{24+3\sqrt{6+8}5+6\sqrt{30}}{19}$
  D) $\frac{-15+3\sqrt{5+18}5+6\sqrt{30}}{36}$
  Show Answer
  The correct answer is B .
• Question 729:
  

  The pie chart shows the income of a civil servant in month. If his monthly income is N6,000. Find his monthly basic salary.

  Options:
  A) N2,050
  B) N2600
  C) N3,100
  D) N3,450
  Show Answer
  The correct answer is A .
• Question 730: Find the mean deviation of 20, 25, 21, 27, 28, 29, to the nearest whole number Options:
  A) 2
  B) 3
  C) 4
  D) 5
  E) 6
  Show Answer
  The correct answer is B .