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 1381: Find the nth term of the sequence 3, 6, 10, 15, 21..... Options:
  A) $\frac{n(n-1)}{2}$
  B) $\frac{n(n+1)}{2}$
  C) $\frac{(n+1)(n+2)}{2}$
  D) n(2n + 1)
  Show Answer
  The correct answer is C .
• Question 1382: If $\left|\begin{array}{cc}x& 3\\ 2& 7\end{array}\right|$ = 15, find the value of x Options:
  A) 4
  B) 5
  C) 2
  D) 3
  Show Answer
  The correct answer is D .
• Question 1383:

  

  From the figure, calculate TH in centimeters

  Options:
  A) $\frac{5}{\sqrt{3}+1}$
  B) $\frac{5}{\sqrt{3}-1}$
  C) $\frac{5}{\sqrt{3}}$
  D) $\frac{\sqrt{3}}{5}$
  Show Answer
  The correct answer is B .
• Question 1384: The graph of the function y = x² + 4 and a straight line PQ are drawn to solve the equation x² - 3x + 2 = 0. What is the equation of PQ? Options:
  A) y = 3x - 2
  B) y = 3x + 2
  C) y = 3x - 4
  D) y = 3x + 4
  Show Answer
  The correct answer is B .
• Question 1385: If x + $\frac{1}{x}$ = 4, find x² + $\frac{1}{x^2}$ Options:
  A) 16
  B) 14
  C) 12
  D) 9
  Show Answer
  The correct answer is B .
• Question 1386: P and Q are fixed points and X is a variable point which moves so that angle PXO = 45^o. What is the locus of x? Options:
  A) A pair of straight lines parallel to PQ
  B) The perpendicular bisector of PQ
  C) An arc of a circle passing through P and Q
  D) A circle with diameter PQ
  E) The bisector of angle PXQ
  Show Answer
  The correct answer is A .
• Question 1387: If the function f is defined by f(x + 2) = 2x² + 7x = 5, find f(-1) Options:
  A) -10
  B) -8
  C) 4
  D) 10
  Show Answer
  The correct answer is B .
• Question 1388: A pair of shoes was sold for N2,250.00 at a loss of 10%. What was the cost price? Options:
  A) N750.00
  B) N2,500.00
  C) N2,538.00
  D) N3,288.00
  E) N4,038.00
  Show Answer
  The correct answer is B .
• Question 1389:

  In how many ways can the letters LEADER be arranged?

  Options:
  A) 72
  B) 144
  C) 360
  D) 720
  Show Answer
  The correct answer is C .
• Question 1390:

  

  In the diagram, QTR is a straight line and < PQT = 30${}^{\circ }$. find the sin of < PTR

  Options:
  A) $\frac{8}{15}$
  B) $\frac{2}{3}$
  C) $\frac{3}{4}$
  D) $\frac{15}{16}$
  Show Answer
  The correct answer is C .