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 231:

  Simplify and express in standard form $\frac{0.00275\times 0.00640}{0.025\times 0.08}$

  Options:
  A) 8.8 x 10^-1
  B) 8.8 x 10^-2
  C) 8.8 x 10^-3
  D) 8.8 x 10³
  Show Answer
  The correct answer is C .
• Question 232: The locus of all points at a distance 8cm from a point N passes through points T and S. If S is equidistant from T and N, find the area of triangle STN. Options:
  A) 4$\sqrt{3c{m}^2}$
  B) 16$\sqrt{3c{m}^2}$
  C) 32cm²
  D) 64cm²
  Show Answer
  The correct answer is B .
• Question 233: Simplify $(\frac{16}{81}{)}^{\frac{1}{4}}÷(\frac{9}{16}{)}^{-\frac{1}{2}}$ Options:
  A) $\frac{2}{3}$
  B) $\frac{1}{2}$
  C) $\frac{8}{9}$
  D) $\frac{1}{3}$
  Show Answer
  The correct answer is B .
• Question 234: A binary operation $\mathrm{\Delta }$ is defined is defined by a $\mathrm{\Delta }$ b = a + b + 1 for any real numbers a and b. Find the inverse of the real number 7 under the operation $\mathrm{\Delta }$, if the identify element is -1 Options:
  A) -1
  B) 5
  C) -7
  D) -9
  E) 9
  Show Answer
  The correct answer is D .
• Question 235:

  

  XYZ is a triangle and XW is perpendicular to YZ at = W. If XZ = 5cm and WZ = 4cm, Calculate XY.

  Options:
  A) 5$\sqrt{3}$cm
  B) 3$\sqrt{5}$cm
  C) 3$\sqrt{3}$cm
  D) 5cm
  E) 6cm
  Show Answer
  The correct answer is B .
• Question 236: If 55_x + 52_x = 77₁₀ find X Options:
  A) 5
  B) 6
  C) 7
  D) 10
  Show Answer
  The correct answer is C .
• Question 237: A student measures a piece of rope and found that it was 1.26m long. If the actual length of the rope was 1.25m, what was the percentage error in the measurement? Options:
  A) 0.25%
  B) 0.01%
  C) 0.80%
  D) 0.40%
  Show Answer
  The correct answer is C .
• Question 238:

  Two dice are tossed. What is the probability that the total score is a prime number.

  Options:
  A) $\frac{5}{12}$
  B) $\frac{5}{9}$
  C) $\frac{1}{6}$
  D) $\frac{1}{3}$
  Show Answer
  The correct answer is A .
• Question 239: If P = 18, Q = 21, R = -6 and S = -4, Calculate $\frac{(P-Q{)}^3+S^2}{R^3}$ + S² Options:
  A) $\frac{-11}{216}$
  B) $\frac{11}{216}$
  C) $\frac{-43}{116}$
  D) $\frac{43}{116}$
  Show Answer
  The correct answer is B .
• Question 240: Given that Z = {1,2,4,5} what is the power of set Z? Options:
  A) 16
  B) 8
  C) 10
  D) 12
  Show Answer
  The correct answer is A .