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 1151:

  If $P=(\frac{Q(R-T)}{15}{)}^{\frac{1}{3}}$, make T the subject of the formula.

  Options:
  A) $T=\frac{15R-Q}{P^3}$
  B) $T=R-\frac{15P^3}{Q}$
  C) $T=\frac{R-15P^3}{Q}$
  D) $T=\frac{R+P^3}{15Q}$
  Show Answer
  The correct answer is B .
• Question 1152: A binary operation $\oplus$ is defines on the set of all positive integers by a $\oplus$ b = ab for all positive integers a, b. Which of the following properties does NOT hold? Options:
  A) closure
  B) identity
  C) positive
  D) inverse
  Show Answer
  The correct answer is D .
• Question 1153: A trader bought goats for N4000 each. He sold them for N180,000 at a loss of 25%. How many goats did he buy? Options:
  A) 60
  B) 50
  C) 45
  D) 36
  Show Answer
  The correct answer is A .
• Question 1154: In a soccer competition in one season, a club had scored the following goals: 2, 0, 3, 3, 2, 1, 4, 0, 0, 5, 1, 0, 2, 2, 1, 3, 1, 4, 1 and 1. The mean, median and mode are respectively Options:
  A) 1, 1.8 and 1.5
  B) 1.8, 1.5 and 1
  C) 1.8, 1 and 1.5
  D) 1.51, 1 and 1.8
  E) 1.5, 1.8 and 1
  Show Answer
  The correct answer is B .
• Question 1155: Find the sum of the first twenty terms of the progression log a, log a², log a³..... Options:
  A) log a²⁰
  B) log a²¹
  C) log a²⁰⁰
  D) log a²¹⁰
  Show Answer
  The correct answer is D .
• Question 1156: PQRS is a cyclic quadrilateral. If ∠QPS = 75^o, what is the size of ∠QRS? Options:
  A) 180^o
  B) 150^o
  C) 105^o
  D) 75^o
  Show Answer
  The correct answer is C .
• Question 1157: The n^th term of the progression $\frac{4}{2}$, $\frac{7}{3}$, $\frac{10}{4}$, $\frac{13}{5}$ is ... Options:
  A) $\frac{1-3n}{n+1}$
  B) $\frac{3n+1}{n+1}$
  C) $\frac{3n+1}{n-1}$
  D) $\frac{3n-1}{n+1}$
  Show Answer
  The correct answer is B .
• Question 1158:

  Simplify 2log $\frac{2}{5}$ - log$\frac{72}{125}$ + log 9

  Options:
  A) 1 - 4 log3
  B) -1 + 2 log 3
  C) -1 + 5 log2
  D) 1 - 2log 2
  Show Answer
  The correct answer is D .
• Question 1159: An $(n-2{)}^2$ sided figure has n diagonals, find the number n of diagonals for a 25 sided figure Options:
  A) 8
  B) 7
  C) 6
  D) 9
  E) 10
  Show Answer
  The correct answer is B .
• Question 1160:

  Rationalise $\frac{2\sqrt{3}+\sqrt{5}}{\sqrt{5}-\sqrt{3}}$

  Options:
  A) (3 √ 15 +11) / 2
  B) 3 √ 15 -11
  C) (3 √ 15 -11) / 2
  D) 3 √ 15 +11
  Show Answer
  The correct answer is A .