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 571:

  

  In the diagram, PQ and RS are chords of a circle centre O which meet at T outside the circle. If TP = 24cm. TQ = 8cm and TS = 12cm, find TR.

  Options:
  A) 16cm
  B) 14cm
  C) 12cm
  D) 8cm
  Show Answer
  The correct answer is A .
• Question 572:

  

  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 573: Reduce each number to two significant figures and then evaluate $\frac{0.021741\times 1.2047}{0.023789}$ Options:
  A) 0.8
  B) 0.9
  C) 1.1
  D) 1.2
  Show Answer
  The correct answer is C .
• Question 574: What is the mean of the data t, 2t-1, t-2, 2t-1, 4t and 2t+2? Options:
  A) 2t
  B) 2t-1
  C) ²/₃t+1
  D) 2t-¹/₃
  Show Answer
  The correct answer is D .
• Question 575: 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 576:

  Evaluate log₅($y^2{x}^5÷125b^{\frac{1}{2}})$

  Options:
  A) 2 log₅y + 5log₅ y² − 3
  B) log₅ y² + 5log₅ x + 3
  C) 25log_y 5 + 3
  D) 2log₅y + 5log₅x − ½ log₅b −3
  Show Answer
  The correct answer is D .
• Question 577: Evaluate 0.0025 × 2.5 × 102 to 2 significant figures. Options:
  A) 0.625 × 10^-3
  B) 0.63 × 10^-2
  C) 6.25 × 10^-3
  D) 6.3 × 10^-2
  E) 6.3 × 10^-1
  Show Answer
  The correct answer is E .
• Question 578: An operation * is defined on the set of real numbers by a*b = a + b + 1. If the identity elements is -1, find the inverse of the element 2 under *. Options:
  A) 4
  B) zero
  C) -2
  D) -4
  Show Answer
  The correct answer is D .
• Question 579:

  Determine the area of the region bounded by y = $2x^2$ + 10 andY= $4x+16$.

  Options:
  A) 18
  B) $\frac{-10}{3}$
  C) $\frac{44}{3}$
  D) $\frac{64}{3}$
  Show Answer
  The correct answer is D .
• Question 580: If 5, 8, 6 and 2 occur with frequencies 3, 2, 4 and 1 respectively, find the product of the modal and medial number. Options:
  A) 36
  B) 48
  C) 38
  D) 40
  E) none of the options
  Show Answer
  The correct answer is A .