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 961: The sum to infinity of the series: 1 + (1/3) + (1/9) + (1/27) + ... is Options:
  A) 11/3
  B) 10/3
  C) 5/2
  D) 3/2
  Show Answer
  The correct answer is D .
• Question 962: The angle of elevation of a building from a measuring instrument placed on the ground is 30^o. If the building is 40m high, how far is the instrument from the foot of the building? Options:
  A) $\frac{20}{\surd 3}$m
  B) $\frac{40}{\surd 3}$m
  C) 20√3m
  D) 40√3m
  Show Answer
  The correct answer is D .
• Question 963:

  

  Triangle SPT is the solution of the linear inequalities

  Options:
  A) 2y - x - 2 $\le$ 0, y + 2x + 2 $\ge$ 0, x $\ge$ 0
  B) 2y - x - 2 $\ge$ 0, y + 2x + 2 $\le$ 0, -2 $\ge$ x $\ge$ -1
  C) -2 $\ge$ x $\ge$ 2, y $\le$ 0, y + 2x + 2 $\ge$ 0, x $\ge$ 0
  D) 2y - x - 2 $\ge$ 0, y + 2x + 2 $\ge$ 0, y $\le$ 0, x $\ge$ 0
  Show Answer
  The correct answer is C .
• Question 964: The binary operation $\oplus$ defined on the set of real numbers is such that x $\oplus$ y = $\frac{xy}{6}$ for all x, y $ϵ$ R. Find the inverse of 20 under this operation when the identity element is 6 Options:
  A) $\frac{9}{5}$
  B) $\frac{1}{20}$
  C) $\frac{10}{3}$
  D) $\frac{1}{12}$
  Show Answer
  The correct answer is B .
• Question 965: A man kept 6 black, 5 brown and 7 purple shirts in a drawer. What is the probability of his picking a purple shirt with his eyes closed? Options:
  A) $\frac{1}{7}$
  B) $\frac{11}{18}$
  C) $\frac{7}{18}$
  D) $\frac{7}{11}$
  Show Answer
  The correct answer is C .
• Question 966: If ⁶P_r = 6, find the value of ⁶P_r+1 Options:
  A) 30
  B) 33
  C) 35
  D) 15
  Show Answer
  The correct answer is A .
• Question 967: A group of 14 children received the following scores in a reading test. 35, 35, 26, 26, 26, 29, 29, 29, 12, 25, 25, 25, 25, 17. What was the median score? Options:
  A) 29
  B) 26
  C) 24.4
  D) 25
  E) 23
  Show Answer
  The correct answer is B .
• Question 968: Convert 72₆ to a number in base three Options:
  A) 2211
  B) 2121
  C) 1212
  D) 1122
  Show Answer
  The correct answer is D .
• Question 969: Simplify $\frac{1}{p}$ - $\frac{1}{q}$ + $\frac{p}{q}$ - $\frac{q}{p}$ Options:
  A) $\frac{1}{p-q}$
  B) $\frac{-1}{p+q}$
  C) $\frac{1}{pq}$
  D) $\frac{1}{pq(p-q)}$
  Show Answer
  The correct answer is B .
• Question 970:

  The angle of a sector of s circle, radius 10.5cm, is 48^o. Calculate the perimeter of the sector.

  Options:
  A) 28.8cm
  B) 25.4cm
  C) 25.6cm
  D) 29.8cm
  Show Answer
  The correct answer is D .