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 2341: x varies directly as y and inversely as z. when x = 5, y = 2 and z = 1. What is the value of x when y = 5 and z = 2? Options:
  A) 2.5
  B) 5
  C) 6.25
  D) 6.52
  E) 7.5
  Show Answer
  The correct answer is C .
• Question 2342: Twenty girls and y boys sat on an examination. The mean marks obtained by the girls and boys were 52 and 57 respectively. if the total score for both girls and boys was 2950, find y. Options:
  A) 51
  B) 48
  C) 30
  D) 25
  E) 18
  Show Answer
  The correct answer is C .
• Question 2343: On each market day Mrs. Bassey walks to the market from her home at a steady speed. This journey normally takes her 2 hours to complete. She finds, however, that by increasing her usual speed by 1 km/hr she can save 20 minutes. Find her usual speed in km/hr Options:
  A) 1$\frac{2}{3}$
  B) 2
  C) 5
  D) 6
  E) 10
  Show Answer
  The correct answer is C .
• Question 2344: 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 2345: 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 2346: The probability that a student will pass a mathematics test is ⅗. If 3 students are chosen at random, what is the probability that at least 2 of them will pass the test? Options:
  A) $\frac{27}{125}$
  B) $\frac{9}{25}$
  C) $\frac{72}{125}$
  D) $\frac{76}{125}$
  E) $\frac{81}{125}$
  Show Answer
  The correct answer is E .
• Question 2347: 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 .
• Question 2348: Evaluate $\frac{0.00000231}{0.007}$ and leave the answer in standard form Options:
  A) 3.3 x 10⁴
  B) 3.3 x 10^-3
  C) 3.3 x 10^-4
  D) 3.3 x 10^-8
  Show Answer
  The correct answer is C .
• Question 2349:

  Age in years	7	8	9	10	11
  No of pupils	4	13	30	44	9

  The table above shows the number of pupils in a class with respect to their ages. If a pie chart is constructed to represent the age, the angle corresponding to 8 years old is

  Options:
  A) 48.6°
  B) 56.3°
  C) 46.8°
  D) 13°
  Show Answer
  The correct answer is C .
• Question 2350: W is directly proportional to U. If W = 5 when U = 3, find U when W = $\frac{2}{7}$ Options:
  A) $\frac{6}{35}$
  B) $\frac{10}{21}$
  C) $\frac{21}{10}$
  D) $\frac{35}{6}$
  Show Answer
  The correct answer is A .