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 2371: Find the value of x for which the function y = x³ - x has a minimum value. Options:
  A) $-\sqrt{3}$
  B) $-\sqrt{\frac{3}{3}}$
  C) $\sqrt{\frac{3}{3}}$
  D) $\sqrt{3}$
  Show Answer
  The correct answer is C .
• Question 2372: Factorize 6^{2x + 1} + 7(6^x) - 5 Options:
  A) [3(6^x) - 5][2(6^x)m + 1]
  B) [3(6^x) + 5][2(6^x) - 1]
  C) [(6^x) - 5][3(6^x) + 1]
  D) [2(6^x) + 5][3(6^x) - 1]
  Show Answer
  The correct answer is B .
• Question 2373:

  If X = {all the perfect squares less than 40}

  Y = {all the odd numbers fro, 1 to 15}. Find X ∩ Y.

  Options:
  A) {3, 9}
  B) {9}
  C) {9, 25}
  D) {1, 9}
  Show Answer
  The correct answer is D .
• Question 2374:

  A school boy lying on the ground 30m away from the foot of a water tank towel observes that the angle of elevation of the top of the tank is 60${}^o$. Calculate the height of the tank.

  Options:
  A) 60$\sqrt{3m}$
  B) 30$\sqrt{3m}$
  C) 20$\sqrt{3m}$
  D) 10$\sqrt{3m}$
  Show Answer
  The correct answer is B .
• Question 2375: Solve the equation $3x^2-4x-5=0$ Options:
  A) x = 1.75 or − 0.15
  B) x = 2.12 or − 0.79
  C) x = 1.5 or − 0.34
  D) x = 2.35 or −1.23
  Show Answer
  The correct answer is B .
• Question 2376: Two parallel chords of a circle are respectively 46cm and 40cm long. If the radius of the circle is 25cm and the centre of the circle lies between the two chords, what is the distance between the chords? Options:
  A) 7cm
  B) 15cm
  C) 22cm
  D) 26cm
  E) 30cm
  Show Answer
  The correct answer is C .
• Question 2377:
  

  The number line represented by the inequality

  Options:
  A) x≤2
  B) x<2
  C) x≥2
  D) x>2
  Show Answer
  The correct answer is C .
• Question 2378: What is the probability that an integer x,(1 $\le$ x $\le$ 20) chosen at random is divisible by both 2 and 3? Options:
  A) 1/20
  B) 1/3
  C) 3/20
  D) 7/10
  Show Answer
  The correct answer is C .
• Question 2379: Evaluate (212)₃ - (121)₃ + (222)₃ Options:
  A) (313)₃
  B) (1000)₃
  C) (1020)₃
  D) (1222)₃
  Show Answer
  The correct answer is C .
• Question 2380:

  

  In the diagram, PQRS is a circle center O. PQR is a diameter and ∠PRQ = 40^o. Calculate ∠QSR.

  Options:
  A) 30^o
  B) 40^o
  C) 45^o
  D) 50^o
  Show Answer
  The correct answer is D .