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 1681: The nth term of two sequences are Q_n = 3 . 2^{n - 2} and U_m = 3 . 2^{2m - 3}. Find the product of Q₂ and U₂. Options:
  A) 18
  B) 12
  C) 6
  D) 3
  Show Answer
  The correct answer is A .
• Question 1682: x varies directly as y and inversely as z. when x = 5, y = 2 and z = 1. What is the value of x when y = 5 and z = 2? Options:
  A) 2.5
  B) 5
  C) 6.25
  D) 6.52
  E) 7.5
  Show Answer
  The correct answer is C .
• Question 1683: Multiply x² + x + 1 by x² - x + 1 Options:
  A) x⁴ - x + x²
  B) x⁴ - x² + x²
  C) x⁴ + x² + 1
  D) x⁴ + x²
  Show Answer
  The correct answer is C .
• Question 1684: What is the different between 0.007685 correct to three significant figures and 0.007685 correct to four places of decimal? Options:
  A) 10^-5
  B) 7 x 10^-4
  C) 8 x 10^-5
  D) 10^-6
  Show Answer
  The correct answer is A .
• Question 1685: If p varies inverse as the square of q and p = 8 when q =4, find q when p = 32 Options:
  A) $\pm$16
  B) $\pm$8
  C) $\pm$4
  D) $\pm$2
  Show Answer
  The correct answer is D .
• Question 1686: Write h in terms of a, b, c, d if a = $\frac{b(1-ch)}{a-dh}$ Options:
  A) h = $\frac{a-b}{ad}$
  B) h = $\frac{1-b}{ad-bc}$
  C) h = $\frac{(a-b{)}^2}{ad-bc}$
  D) h = $\frac{a-b}{ad-bc}$
  E) h = $\frac{b-a}{ab-dc}$
  Show Answer
  The correct answer is D .
• Question 1687:

  If (x - a) is a factor of bx - ax + x², find the other factor.

  Options:
  A) (x + b)
  B) (x - b)
  C) (a + b)
  D) (a - b)
  Show Answer
  The correct answer is A .
• Question 1688:

  

  In the diagram, QP//ST:PQR = 34${}^{\circ }$ QRS = 73${}^{\circ }$ and RS = RT. Find SRT

  Options:
  A) 68${}^{\circ }$
  B) 102${}^{\circ }$
  C) 107${}^{\circ }$
  D) 141${}^{\circ }$
  Show Answer
  The correct answer is C .
• Question 1689:

  Find the range of values of t which satisfies the inequality.

  2t − 1 $\le$ 3 and 2− t $\ge$ 5

  Options:
  A) -3 $\le$ t $\le$ 1
  B) -2 $\le$ t $\le$ 3
  C) -3 $\le$ t $\le$ 4
  D) -3 $\le$ t $\le$ 2
  Show Answer
  The correct answer is D .
• Question 1690: 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 .