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 551: If three unbiased coins are tossed, find the probability that they are all heads Options:
  A) $\frac{1}{2}$
  B) $\frac{1}{3}$
  C) $\frac{1}{9}$
  D) $\frac{1}{8}$
  Show Answer
  The correct answer is D .
• Question 552: Solve the equation x² - 3x - 10 = 0 Options:
  A) -2 or -5
  B) -3 or -10
  C) 5 or -2
  D) 2 or 5
  E) 3 or 10
  Show Answer
  The correct answer is C .
• Question 553: Calculate the area of a parallelogram whose diagonals are of length 8cm and 12cm and intersect at an angle of 135° Options:
  A) 271.5cm²
  B) 135.8cm²
  C) 96.0cm²
  D) 48.0cm²
  E) 33.9cm²
  Show Answer
  The correct answer is E .
• Question 554: The angle between the positive horizontal axis and a given line is 135^o. Find the equation of the line if it passes through the point (2,3) Options:
  A) x - y = 1
  B) x + y = 1
  C) x + y = 5
  D) x - y = 5
  Show Answer
  The correct answer is C .
• Question 555: Find the range of values of x which satisfy the inequalities 4x - 7 $\le$ 3x and 3x - 4 $\le$ 4x Options:
  A) -4 $\le$ x $\le$ 7
  B) -7 $\le$ x $\le$ 4
  C) x $\ge$ -7
  D) -7 $\le$ x $\le$ 6
  Show Answer
  The correct answer is A .
• Question 556: 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 .
• Question 557:

  The mean age group of some students is 15years. When the age of a teacher, 45 years old, is added to the ages of the students, the mean of their ages become18 years. Find the number of students in the group.

  Options:
  A) 7
  B) 9
  C) 15
  D) 42
  Show Answer
  The correct answer is B .
• Question 558: If 3 boys shared x oranges among themselves in the ratio 3:5:8, and smallest share was 45 oranges, find the value of x Options:
  A) 75
  B) 120
  C) 165
  D) 195
  E) 240
  Show Answer
  The correct answer is E .
• Question 559: Make Q the subject of formula if p = $\frac{M}{5}$(X + Q) + 1 Options:
  A) $\frac{5P-MX+5}{M}$
  B) $\frac{5P-MX-5}{M}$
  C) $\frac{5P+MX+5}{M}$
  D) $\frac{5P+MX-5}{M}$
  Show Answer
  The correct answer is B .
• Question 560:

  A bag contains 8 red balls and some white balls. If the probability of drawing a white ball is half of the probability of drawing a red ball then find the probability of drawing a red ball and a white ball if the balls are drawn without replacement.

  Options:
  A) $\frac{1}{3}$
  B) $\frac{2}{9}$
  C) $\frac{2}{3}$
  D) $\frac{8}{33}$
  Show Answer
  The correct answer is D .