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 1221: Make x the subject of the relation $\frac{1+ax}{1-ax}$ = $\frac{p}{q}$ Options:
  A) $\frac{p+q}{a(p-q)}$
  B) $\frac{p-q}{a(p+q)}$
  C) $\frac{p-q}{apq}$
  D) $\frac{pq}{a(p-q)}$
  Show Answer
  The correct answer is B .
• Question 1222: Find the minimum value of the function y = x(1+x) Options:
  A) -¹/₄
  B) -¹/₂
  C) ¹/₄
  D) ¹/₂
  Show Answer
  The correct answer is A .
• Question 1223: Express 123456 to 3 significant figures Options:
  A) 123 000
  B) 124 000
  C) 125 000
  D) 126 000
  Show Answer
  The correct answer is A .
• Question 1224: Simplify $[1÷(x^2+3x+2)]+[1÷(x^2+5x+6)]$ Options:
  A) $\frac{2}{(x+1{)}^2}$
  B) $\frac{2}{(x+1)(x+2}$
  C) $\frac{2}{(x+1)(x+2}$
  D) $\frac{2}{(x+1)(x+3}$
  Show Answer
  The correct answer is D .
• Question 1225:

  The cost C of running a school is directly proportional to the number of students N, if 20 students cost #10,000, How many students can #1,000,000 cover?

  Options:
  A) 3000
  B) 1000
  C) 2000
  D) 4000
  Show Answer
  The correct answer is C .
• Question 1226: The solution of the quadratic inequality (x² + x - 12) $\ge$ 0 is Options:
  A) x $\ge$ 3 or x $\ge$ -4
  B) x $\le$ 3 or x $\le$ -4
  C) x $\ge$ 3 or x $\le$ -4
  D) x $\ge$ -3 or x $\le$ 4
  Show Answer
  The correct answer is C .
• Question 1227: In a family of 21 people, the average age is 14years. If the age of the grandfather is not counted, the average age drops to 12 years. What is the age of the grandfather? Options:
  A) 35 years
  B) 40 years
  C) 42 years
  D) 54 years
  Show Answer
  The correct answer is D .
• Question 1228:

  The acres for rice, pineapple, cassava, cocoa and palm oil in a certain district are given respectively as 2, 5, 3, 11 and 9. What is the angle of the sector of cassava in a pie chart?

  Options:
  A) 180${}^o$
  B) 36${}^o$
  C) 60${}^o$
  D) 108${}^o$
  Show Answer
  The correct answer is B .
• Question 1229:

  

  In the figure above, what is the equation of the line that passes the y-axis at (0,5) and passes the x-axis at (5,0)?

  Options:
  A) y = x + 5
  B) y = -x + 5
  C) y = x - 5
  D) y = -x - 5
  Show Answer
  The correct answer is B .
• Question 1230: 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 .