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 981:

  $\begin{array}{cccccc}\text{Values}& 0& 1& 2& 3& 4\\ \text{Frequency}& 1& 2& 2& 1& 9\end{array}$

  Find the mode of the distribution above

  Options:
  A) 1
  B) 2
  C) 3
  D) 4
  Show Answer
  The correct answer is D .
• Question 982: Find the mean deviation of 1, 2, 3 and 4. Options:
  A) 2.5
  B) 2.0
  C) 1.0
  D) 1.5
  E) 1.2
  Show Answer
  The correct answer is C .
• Question 983:

  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 984: At what value of x is the function x² + x + 1 minimum? Options:
  A) 1
  B) $\frac{3}{4}$
  C) $\frac{5}{3}$
  D) 9
  Show Answer
  The correct answer is A .
• Question 985: Rationalize 5 ÷ (2 − √3) Options:
  A) 3(2 + √5)
  B) 2(3 + √5)
  C) 5(2 + √3)
  D) 3 √2 + 1
  Show Answer
  The correct answer is C .
• Question 986:

  A coin is thrown 3 times. What is the probability that atleast one head is obtained?

  Options:
  A) $\frac{7}{8}$
  B) $\frac{3}{8}$
  C) None the above
  D) $\frac{1}{8}$
  Show Answer
  The correct answer is A .
• Question 987:

  If (x - a) is a factor of bx - ax + x², find the other factor.

  Options:
  A) (x + b)
  B) (x - b)
  C) (a + b)
  D) (a - b)
  Show Answer
  The correct answer is A .
• Question 988:

  

  In the fiqure where PQRTU is a circle, ISTI = IRSI and angle TSR = 52${}^{\circ }$. Find the angle marked m.

  Options:
  A) 128${}^{\circ }$
  B) 52${}^{\circ }$
  C) 104${}^{\circ }$
  D) 64${}^{\circ }$
  E) 116${}^{\circ }$
  Show Answer
  The correct answer is E .
• Question 989:

  Calculate the perimeter of a sector of a circle of radius 9cm and angle 36^o.

  Options:
  A) 18cm
  B) (18 + $\frac{9\pi }{5}$)cm
  C) (9 + $\frac{9\pi }{5}$)cm
  D) $\frac{9\pi }{5}$cm
  Show Answer
  The correct answer is B .
• Question 990: 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 .