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 1821:

  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 1822: A car dealer bought a second-hand car for ₦250,000 and spent ₦70,000 refurbishing it. He then sold the car for ₦400,000. What is the percentage gain? Options:
  A) 60%
  B) 32%
  C) 25%
  D) 20%
  Show Answer
  The correct answer is C .
• Question 1823: The scores of set of final year students in the first semester examination in a paper are 41, 29, 55, 21, 47, 70, 70, 40, 43, 56, 73, 23, 50, 50. Find the median of the scores. Options:
  A) 47
  B) 50
  C) 48$\frac{1}{2}$
  D) 48
  E) 49
  Show Answer
  The correct answer is C .
• Question 1824:

  Musa borrows N10.00 at 2% per month simple interest and repays N8.00 after 4 months. How much does he still owe?

  Options:
  A) N10.80
  B) N10.67
  C) N2.80
  D) N2.67
  Show Answer
  The correct answer is C .
• Question 1825:

  If ${25}^{1-x}\times 5^{x+2}÷(\frac{1}{125}{)}^x={625}^{-1}$, find the value of x.

  Options:
  A) x = -4
  B) x = 2
  C) x = -2
  D) x = 4
  Show Answer
  The correct answer is A .
• Question 1826: Which of the following is a factor of 15 + 7x - 2x² Options:
  A) x + 3
  B) x - 3
  C) x - 5
  D) x + 5
  Show Answer
  The correct answer is C .
• Question 1827:

  Tossing a coin and rolling a die are two separate events. What is the probability of obtaining a tail on the coin and an even number on the die?

  Options:
  A) $\frac{1}{16}$
  B) $\frac{1}{6}$
  C) $\frac{1}{4}$
  D) $\frac{3}{8}$
  Show Answer
  The correct answer is C .
• Question 1828: If n{A} = 6, n{B} = 5 and n{A ∩ B} = 2, find n{A ∪ B} Options:
  A) 7
  B) 8
  C) 9
  D) 13
  E) 15
  Show Answer
  The correct answer is C .
• Question 1829: 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 1830: If 125_x = 20₁₀ find x Options:
  A) 2
  B) 3
  C) 4
  D) 5
  Show Answer
  The correct answer is B .