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 1381:

  A binary operation $\oplus$ on real numbers is defined by x $\oplus$ y = xy + x + y for any two real numbers x and y. The value of (-$\frac{3}{4}$) $\oplus$ 6 is

  Options:
  A) -$\frac{3}{4}$
  B) $\frac{45}{4}$
  C) -$\frac{4}{3}$
  D) $\frac{3}{4}$
  Show Answer
  The correct answer is A .
• Question 1382:

  

  Find the value of $\theta$ in the diagram

  Options:
  A) 60${}^{\circ }$
  B) 100${}^{\circ }$
  C) 120${}^{\circ }$
  D) 30${}^{\circ }$
  Show Answer
  The correct answer is C .
• Question 1383:

  The interior angle of a regular polygon is five times the size of its exterior angle. Identify the polygon.

  Options:
  A) dodecagon
  B) enneadecagon
  C) icosagon
  D) hendecagon
  Show Answer
  The correct answer is A .
• Question 1384: A trader goes to Ghana for y days with y cedis. For the first x days, he spends X cedis per day. The amount he has to spend per day for the rest of his stay is Options:
  A) $\frac{y(y-x)}{y-x}$ cedis
  B) $\frac{Yy-Xx)}{y-x}$ cedis
  C) $\frac{Y-Xy)}{y-x}$ cedis
  D) $\frac{Y-X}{y-x}$ cedis
  E) $\frac{Y-Xx}{y-x}$ cedis
  Show Answer
  The correct answer is E .
• Question 1385: If M represents the median and D the mode of the measurements 5, 9, 3, 5, 8 then (M, D) is Options:
  A) (6, 5)
  B) (5, 8)
  C) (5, 7)
  D) (5, 5)
  E) (7, 5)
  Show Answer
  The correct answer is D .
• Question 1386: The seconds term of a geometric series is 4 while the fourth term is 16. Find the sum of the first five terms Options:
  A) 60
  B) 62
  C) 54
  D) 64
  Show Answer
  The correct answer is B .
• Question 1387: Simplify 2$\frac{5}{12}$ - 1$\frac{7}{8}$ x $\frac{6}{5}$ Options:
  A) $\frac{1}{6}$
  B) $\frac{13}{20}$
  C) $\frac{11}{30}$
  D) $\frac{9}{4}$
  E) $\frac{5}{3}$
  Show Answer
  The correct answer is A .
• Question 1388: Simplify 3 log₆9 + log₆12 + log₆64 - log₆72 Options:
  A) 5
  B) 7776
  C) log₆31
  D) (7776)₆
  Show Answer
  The correct answer is A .
• Question 1389:

  $\begin{array}{cccccccc}\text{No. of children}& 0& 1& 2& 3& 4& 5& 6\\ \text{No. of families}& 7& 11& 6& 7& 7& 5& 3\end{array}$

  Find the mode and median respectively of the distribution above

  Options:
  A) 2, 1
  B) 1, 2
  C) 1, 5
  D) 5, 2
  Show Answer
  The correct answer is B .
• Question 1390: The ratio of the areas of similar triangles is necessarily equal to Options:
  A) the ratio of the corresponding sides
  B) the ratio of the squares on corresponsing sides
  C) the ratio of the corresponding heights of the triangles
  D) half the ratio of the corresponding heights of the triangles
  E) the ratio of the corresponding bases to the heights of the triangles
  Show Answer
  The correct answer is C .