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 1121: Find the mean deviation of 20, 25, 21, 27, 28, 29, to the nearest whole number Options:
  A) 2
  B) 3
  C) 4
  D) 5
  E) 6
  Show Answer
  The correct answer is B .
• Question 1122: The sum of the first n positive integers is Options:
  A) $\frac{1}{2}$(n + 1)
  B) n $\frac{1}{2}$(n + 1)
  C) n(n - 1)
  D) n(n + 1)
  Show Answer
  The correct answer is B .
• Question 1123: 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 1124:

  In a committee of 5, which must be selected from 4 males and 3 females. In how many ways can the members be chosen if it were to include 2 females?

  Options:
  A) 144 ways
  B) 15 ways
  C) 185 ways
  D) 12 ways
  Show Answer
  The correct answer is D .
• Question 1125: Solve for x if 25^x + 3(5^x) = 4 Options:
  A) 1 or -4
  B) zero
  C) 1
  D) -4 or o
  Show Answer
  The correct answer is B .
• Question 1126:
  

  In the diagram above angle LNM and angle YNZ are represented by g and h respectively. Find∠MNY

  Options:
  A) 180º - gº - hº
  B) 360º - (g-h)º
  C) 180º - (g-h)º
  D) 360º - gº - hº
  Show Answer
  The correct answer is C .
• Question 1127: What is the value of p if the gradient of the line joining (-1,p) and (p, 4) is

  2

  3

  ? Options:
  A) -2
  B) -1
  C) 1
  D) 2
  Show Answer
  The correct answer is D .
• Question 1128: Solve for x in the quadratic equation. 2x² + 12x + 10 = 0 Options:
  A) x = -5, -1
  B) x = -5,1
  C) x = -3, -2
  D) x = 3, 2
  E) x = 6, 5
  Show Answer
  The correct answer is A .
• Question 1129:

  A binary operation x is defined by a x b = a${}^b$. If a x 2 = 2 - a, find the possible values of a?

  Options:
  A) 1, -2
  B) 2, -1
  C) 2, -2
  D) 1, -1
  Show Answer
  The correct answer is A .
• Question 1130: Two ladders of length 5m and 7m lean against a pole and make angles 45° and 60° with the ground respectively. What is their distance apart on the pole correct to two decimal places? Options:
  A) 9.60m
  B) 6.06m
  C) 2.54m
  D) 2.53m
  E) 2.00m
  Show Answer
  The correct answer is D .