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 1841:

  The sum of the ages of Musa and Lawal is 28 years. After sharing a certain sum of money in the ratio of their ages, Musa gets ₦600 and Lawal ₦800. How old is Lawal?

  Options:
  A) 14 years
  B) 20 years
  C) 12 years
  D) 16 years
  Show Answer
  The correct answer is D .
• Question 1842: From the kip of a storey-buliding, the angle of depression of a mango on a tree 20 m away from the base of the storey-building is 68°. if the mango is 4.5 m above the ground, what is the height of the storey-building to the nearest metre? Options:
  A) 55m
  B) 54m
  C) 50m
  D) 49m
  E) 45m
  Show Answer
  The correct answer is B .
• Question 1843: If y = (1 + x)², find $\frac{dy}{dx}$ Options:
  A) x - 1
  B) 2 + 2x
  C) 1 + 2x
  D) 2x - 1
  Show Answer
  The correct answer is B .
• Question 1844: Simplify 3 ${}^{n-1}$ × 27 $\frac{n+1}{{81}^n}$ Options:
  A) 3${}^{2n}$
  B) 9
  C) 3ⁿ
  D) 3 ${}^{n+1}$
  Show Answer
  The correct answer is B .
• Question 1845:

  How many times, correct to the nearest whole number, will a man run round a circular track of diameter 100m to cover a distance of 1000m?

  Options:
  A) 3
  B) 4
  C) 5
  D) 6
  Show Answer
  The correct answer is B .
• Question 1846:

  Find the length of a side of a rhombus whose diagonals are 6cm and 8cm

  Options:
  A) 8cm
  B) 5cm
  C) 4cm
  D) 3cm
  Show Answer
  The correct answer is B .
• Question 1847:

  

  The figure shows circles of radii 3cm and 2cm with centres at X and Y respectively. The circles have a transverse common tangent of length 25cm. Calculate XY.

  Options:
  A) $\sqrt{630}$cm
  B) $\sqrt{626}$cm
  C) $\sqrt{615}$cm
  D) $\sqrt{600}$cm
  Show Answer
  The correct answer is B .
• Question 1848: Evaluate (2⁵ × 4^-2) ÷ (2^-3 × 2⁶) Options:
  A) 9
  B) 8
  C) 3
  D) $\frac{8}{9}$
  E) $\frac{1}{4}$
  Show Answer
  The correct answer is E .
• Question 1849: The ratio of the base area of a hollow cone to that of its curved surface is 1:4. If its base radius is 7cm, calculate the slant height of the cone Options:
  A) 7cm
  B) 22cm
  C) 28cm
  D) 49cm
  E) 154cm
  Show Answer
  The correct answer is C .
• Question 1850: What is the value of k if the mid-point of the line joining (1 - k, - 4) and (2, k + 1) is (-k , k)? Options:
  A) -3
  B) -1
  C) -4
  D) -2
  Show Answer
  The correct answer is A .