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 91: find then equation line through (5, 7) parallel to the line 7x + 5y = 12 Options:
  A) 5x + 7y = 120
  B) 7x + 5y = 70
  C) x + y = 7
  D) 15x + 17y = 90
  Show Answer
  The correct answer is B .
• Question 92: If the distance between the points (x, 3) and (-x, 2) is 5. Find x Options:
  A) 6.0
  B) 2.5
  C) $\sqrt{6}$
  D) $\sqrt{3}$
  Show Answer
  The correct answer is C .
• Question 93: a binary operation $\oplus$ o the set of rational numbers is defined as x $\oplus$ y = $\frac{x^2-y^2}{2xy}$. Find -5 $\oplus$ 3 Options:
  A) $\frac{8}{15}$
  B) -$\frac{17}{15}$
  C) $\frac{17}{15}$
  D) $\frac{8}{-15}$
  Show Answer
  The correct answer is D .
• Question 94: Find the standard deviation of 2, 3, 5 and 6 Options:
  A) √6
  B) √10
  C) √$\frac{2}{5}$
  D) √$\frac{5}{2}$
  Show Answer
  The correct answer is D .
• Question 95:

  The third term of an A.P is 6 and the fifth term is 12. Find the sum of its first twelve terms

  Options:
  A) 201
  B) 144
  C) 198
  D) 72
  Show Answer
  The correct answer is C .
• Question 96: Simplify T = $\frac{4R_2}{R_1^{-1}+R_2^{-1}+4R_3^{-1}}$ Options:
  A) $\frac{4R_1\times R_2{R}_3}{R_2{R}_3+R_1{R}_3+4R_1{R}_2}$
  B) $\frac{R_1{R}_2{R}_3}{R_2{R}_3+R_1{R}_2+4R_1{R}_2}$
  C) $\frac{16R_1{R}_2{R}_3}{R_2{R}_3+R_1{R}_2+R_1{R}_2}$
  D) $\frac{4R_1{R}_2{R}_3}{4R_2{R}_3+R_1{R}_2+4R_1{R}_2}$
  Show Answer
  The correct answer is A .
• Question 97: 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 98: A binary operation * is defined by x * y = x^y. If x * 2 = 12 - x, find the possible values of x Options:
  A) 3,4
  B) 3,-4
  C) -3,4
  D) -3,-4
  Show Answer
  The correct answer is B .
• Question 99:

  P(-6, 1) and Q(6, 6) are the two ends of the diameter of a given circle. Calculate the radius.

  Options:
  A) 6.5 units
  B) 13.0 units
  C) 3.5 units
  D) 7.0 units
  Show Answer
  The correct answer is A .
• Question 100:

  At simple interest, a man made a deposit of some money in the bank. The amount in his bank account after 10 years is three times the money deposited. If the interest rate stays the same, after how many years will the amount be five times the money deposited?

  Options:
  A) 15 years
  B) 25 years
  C) 20 years
  D) 30 years
  Show Answer
  The correct answer is C .