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 2651: y varies directly as w². When y = 8, w = 2. Find y when w = 3 Options:
  A) 18
  B) 12
  C) 9
  D) 6
  Show Answer
  The correct answer is A .
• Question 2652:

  

  The diagram above is a circle with centre C. P, Q and S are points on the circumference. PS and SR are tangents to the circle. ∠PSR = 36${}^{\circ }$. Find ∠PQR

  Options:
  A) 72${}^{\circ }$
  B) 36${}^{\circ }$
  C) 144${}^{\circ }$
  D) 54${}^{\circ }$
  Show Answer
  The correct answer is A .
• Question 2653: In a class of 120 students, 18 of them scored an A grade in mathematics. If the section representing the A grade students on a pie chart has angle Z^o at the centre of the circle, what is Z? Options:
  A) 15
  B) 27
  C) 50
  D) 52
  E) 54
  Show Answer
  The correct answer is E .
• Question 2654: If a metal pipe 10cm long has an external diameter of 12cm and a thickness of 1cm find the volume of the metal used in making the pipe Options:
  A) 120$\pi$cm³
  B) 110$\pi$cm³
  C) 60$\pi$cm³
  D) 50$\pi$cm³
  Show Answer
  The correct answer is B .
• Question 2655: The probability of an event P is $\frac{3}{4}$ while that of another event Q is $\frac{1}{6}$. If the probability of both P and Q is $\frac{1}{2}$. What is the probability of either P or Q. Options:
  A) $\frac{1}{96}$
  B) $\frac{1}{8}$
  C) $\frac{5}{6}$
  D) $\frac{11}{12}$
  Show Answer
  The correct answer is C .
• Question 2656: Find the range of 1/6, 1/3, 3/2, 2/3, 8/9 and 4/3 Options:
  A) 3/4
  B) 5/6
  C) 7/6
  D) 4/3
  Show Answer
  The correct answer is D .
• Question 2657: What is the least possible value of $\frac{9}{1+2x^2}$ if 0 $\ge$ x $\ge$ 2? Options:
  A) 9
  B) 5
  C) 1
  D) 2
  Show Answer
  The correct answer is C .
• Question 2658: A cone was developed from a sector of a circle with radius10cm and an angle at the centre of 108°. What is the radius of the cone? Options:
  A) 9.0cm
  B) 8.5cm
  C) 7.2cm
  D) 4.3cm
  E) 3.0cm
  Show Answer
  The correct answer is E .
• Question 2659: If sin $\theta$ = cos $\theta$, find $\theta$ between 0^o and 360^o Options:
  A) 45^o, 225^o
  B) 135^o, 315^o
  C) 45^o, 315^o
  D) 135^o, 225^o
  Show Answer
  The correct answer is C .
• Question 2660: Twenty girls and y boys sat on an examination. The mean marks obtained by the girls and boys were 52 and 57 respectively. if the total score for both girls and boys was 2950, find y. Options:
  A) 51
  B) 48
  C) 30
  D) 25
  E) 18
  Show Answer
  The correct answer is C .