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 2141: If $\frac{9^{2x-1}}{{27}^{x+1}}=1$find the value of x. Options:
  A) 8
  B) 5
  C) 3
  D) 2
  Show Answer
  The correct answer is B .
• Question 2142: Solve the simultaneous equations $\frac{2}{x}-\frac{2}{x}$ = 2, $\frac{4}{x}+\frac{3}{y}$ = 10 Options:
  A) x = $\frac{3}{2}$, y = $\frac{3}{2}$
  B) x = $\frac{1}{2}$, y = $\frac{3}{2}$
  C) x = $\frac{-1}{2}$, y = $\frac{-3}{2}$
  D) x = $\frac{1}{2}$, y = $\frac{3}{2}$
  Show Answer
  The correct answer is B .
• Question 2143:

  If y = 8x${}^3$ - 3x${}^2$ + 7x - 1, find $\frac{{\mathrm{d}}^{2}y}{\mathrm{d}{x}^2}$.

  Options:
  A) 48x - 6
  B) 11x${}^2$ + 6x - 7
  C) 32x + 7
  D) 24x${}^2$ - 6x + 7
  Show Answer
  The correct answer is A .
• Question 2144: A woman bought a grinder for ₦60,000. She sold it at a loss of 15%. How much did she sell it? Options:
  A) ₦53,000
  B) ₦52,000
  C) ₦51,000
  D) ₦50,000
  Show Answer
  The correct answer is C .
• Question 2145:
  

  How many students scored at least25%

  Options:
  A) 16
  B) 19
  C) 3
  D) 8
  Show Answer
  The correct answer is A .
• Question 2146: An arc of a circle subtends an angle of 75° at the centre of the circle. If the diameter of the circle is 7cm, what Is the length of the arc? (take π = 3.142) Options:
  A) 4.58 cm
  B) 8.02 cm
  C) 16.04 cm
  D) 32.08 cm
  E) 34 cm
  Show Answer
  The correct answer is A .
• Question 2147:

  If $6x^3+2x^2-5x+1$ divides $x^2-x-1$, find the remainder.

  Options:
  A) 9x + 9
  B) 2x + 6
  C) 6x + 8
  D) 5x - 3
  Show Answer
  The correct answer is A .
• Question 2148: The 3rd term of an A.P is 4x - 2y and the 9th term is 10x - 8y. Find the common difference. Options:
  A) 19x - 17y
  B) 8x - 4y
  C) x - y
  D) 2x
  Show Answer
  The correct answer is C .
• Question 2149:

  $\begin{array}{cccc}\text{Age in years}& 10& 11& 12\\ \text{Number of pupils}& 6& 27& 7\end{array}$

  The table above shows the number of pupils in each age group in a class. What is the probability that a pupil chosen at random is at least 11 years old?

  Options:
  A) $\frac{27}{40}$
  B) $\frac{17}{20}$
  C) $\frac{33}{40}$
  D) $\frac{3}{20}$
  Show Answer
  The correct answer is B .
• Question 2150:

  Find the area bounded by the curve y = 3x² - 2x + 1, the ordinates x = 1 and x = 3 and the x-axix.

  Options:
  A) 24
  B) 22
  C) 21
  D) 20
  Show Answer
  The correct answer is D .