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 1421: 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
  E) 16 ways
  Show Answer
  The correct answer is D .
• Question 1422:

  

  The shaded region in the Venn diagram above is

  Options:
  A) P${}^{\circ }$ $\cap$(Q $\cap$ R)
  B) P $\cap$ Q
  C) P${}^{\circ }$$\cup$(Q$\cap$R)
  D) P${}^{\circ }$ $\cup$(Q $\cup$R)
  Show Answer
  The correct answer is A .
• Question 1423: If m * n = [m_n − n_m] for m, n belong to R, evaluate − 3 * 4 Options:
  A) 3
  B) 4
  C) 5
  D) 6
  Show Answer
  The correct answer is C .
• Question 1424: A number is chosen at random from 10 to 30 both inclusive. What is the probability that the number is divisible by 3? Options:
  A) $\frac{2}{15}$
  B) $\frac{1}{10}$
  C) $\frac{1}{3}$
  D) $\frac{2}{5}$
  Show Answer
  The correct answer is C .
• Question 1425: If 0.0000152 x 0.042 = A x 10⁸, where 1 $\le$ A < 10, find A and B. Options:
  A) A = 9, B = 6.38
  B) A = 6.38, B = -9
  C) A = -6.38, B = -9
  D) A = -9, B = -6.38
  Show Answer
  The correct answer is B .
• Question 1426: Find the angle subtended at the center of a circle by a chord which is equal in length to the radius of the circle. Options:
  A) 30${}^{\circ }$
  B) 45${}^{\circ }$
  C) 60${}^{\circ }$
  D) 90${}^{\circ }$
  Show Answer
  The correct answer is C .
• Question 1427: Solve the system of equations: $2^{x+y}=32,3^{3y-x}=27$ Options:
  A) (3, 2)
  B) (-3, 2)
  C) (3, -2)
  D) (-3, -2)
  E) (2, 2)
  Show Answer
  The correct answer is A .
• Question 1428: The fifth term of an A.P is 24 and the eleventh term is 96. Find the first term. Options:
  A) 12
  B) 4
  C) -12
  D) -24
  Show Answer
  The correct answer is D .
• Question 1429: Determine the distance on the earth's surface between two town P (lat^oN, Long 20^oN) and Q(Lat 60^oN, Long 25^oW) (Radius of the earth = 6400km) Options:
  A) $\frac{800\pi }{9}$km
  B) $\frac{800\sqrt{3\pi }}{9}$km
  C) 800$\pi$ km
  D) 800$\sqrt{3\pi }$ km
  Show Answer
  The correct answer is B .
• Question 1430: If x = $\left(\begin{array}{cc}1& 2\\ 0& 3\end{array}\right)$ and y = $\left(\begin{array}{cc}2& 1\\ 4& 3\end{array}\right)$. Find xy. Options:
  A) $\left(\begin{array}{cc}10& 7\\ 12& 9\end{array}\right)$
  B) $\left(\begin{array}{cc}2& 7\\ 4& 17\end{array}\right)$
  C) $\left(\begin{array}{cc}10& 4\\ 4& 6\end{array}\right)$
  D) $\left(\begin{array}{cc}4& 3\\ 10& 9\end{array}\right)$
  Show Answer
  The correct answer is A .