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 361:

  12 men complete a job in 9 days. How many men working at the same rate would be required to complete the job in 6 days?

  Options:
  A) 24
  B) 18
  C) 12
  D) 9
  E) 8
  Show Answer
  The correct answer is E .
• Question 362:

  If $\left[\begin{array}{cc}x& 3\\ 2& 7\end{array}\right]$= 15, find the value of x.

  Options:
  A) 3
  B) 4
  C) 5
  D) 2
  Show Answer
  The correct answer is A .
• Question 363: A sector of angle 120° is cut out from a circle of radius 13.5cm. what area of the circle is remaining ? (π = $\frac{22}{7}$) Options:
  A) 14.1cm²
  B) 95.5cm²
  C) 190.9cm²
  D) 381.9cm²
  E) 763.7cm²
  Show Answer
  The correct answer is D .
• Question 364: Simplify 4 √[(390695T− 8)½)] Options:
  A) 1/T
  B) 2T
  C) 5/T
  D) T/5
  Show Answer
  The correct answer is C .
• Question 365: If U = (s, p, i, e, n, d, o, u, r), X = (s, p, e, n, d) Y = (s, e, n, o, u), Z = (p, n, o, u, r) find X ∩ Y ∪ Z Options:
  A) (p, o, u, r)
  B) (s, p, d, r)
  C) (p, n, d)
  D) (n, d, u)
  Show Answer
  The correct answer is C .
• Question 366: If x = $\left|\begin{array}{ccc}1& 0& 1\\ 2& -1& 0\\ -1& 0& 1\end{array}\right|$ and y = $\left|\begin{array}{ccc}-1& 1& 2\\ 0& -1& -1\\ 2& 0& 1\end{array}\right|$
  find 2x - y Options:
  A) $\left|\begin{array}{ccc}3& -1& 0\\ 4& -3& -1\\ -4& 1& 1\end{array}\right|$
  B) $\left|\begin{array}{ccc}3& -1& 0\\ 4& -1& 1\\ -4& 1& 1\end{array}\right|$
  C) $\left|\begin{array}{ccc}3& -1& 0\\ 4& -3& 1\\ -4& 1& 1\end{array}\right|$
  D) $\left|\begin{array}{ccc}3& -1& 0\\ 4& 1& 1\\ -4& -1& 1\end{array}\right|$
  Show Answer
  The correct answer is B .
• Question 367:

  If log${}_{10}$2 = 0.3010 and log${}_{10}$3 = 0.4771, eventually without using the logarithm tables, log${}_{10}$4.5

  Options:
  A) 0.3010
  B) 0.4771
  C) 0.6532
  D) 0.9542
  Show Answer
  The correct answer is C .
• Question 368:

  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 369: Evaluate $\int$ sec²$\theta$ d $\theta$ Options:
  A) sec$\theta$ tan$\theta$ + k
  B) tan$\theta$ + k
  C) 2 sec$\theta$ + k
  D) sec$\theta$ + k
  Show Answer
  The correct answer is B .
• Question 370: Rationalize 5 ÷ (2 − √3) Options:
  A) 3(2 + √5)
  B) 2(3 + √5)
  C) 5(2 + √3)
  D) 3 √2 + 1
  Show Answer
  The correct answer is C .