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 371:

  If ${25}^{1-x}\times 5^{x+2}÷(\frac{1}{125}{)}^x={625}^{-1}$, find the value of x.

  Options:
  A) x = -4
  B) x = 2
  C) x = -2
  D) x = 4
  Show Answer
  The correct answer is A .
• Question 372: A quadratic equation with roots -1$\frac{1}{2}$ and $\frac{1}{4}$ is Options:
  A) x² + 3x + 4 = 0
  B) 8x² + 10x + 3 = 0
  C) 8x² +12x – 3 = 0
  D) 8x² + 10x-3.= 0
  E) 8x² + 12x + 3 = 0
  Show Answer
  The correct answer is D .
• Question 373:

  If $\text{N}=\left(\begin{array}{ccc}3& 5& -4\\ 6& -3& -5\\ -2& 2& 1\end{array}\right)$, find |N|.

  Options:
  A) 65
  B) 23
  C) 17
  D) 91
  Show Answer
  The correct answer is C .
• Question 374:

  If P $=\left[\begin{array}{cc}x+3& x+2\\ x+1& x-1\end{array}\right]$ evaluate x if |P| = -10

  Options:
  A) -5
  B) -2
  C) 2
  D) 5
  Show Answer
  The correct answer is D .
• Question 375:

  The goals scored by 40 football teams from three league divisions are recorded below

  No of goals	0	1	2	3	4	5	6
  Frequency	4	3	15	16	1	0	1

  What is the total number of goals scored by all the teams?

  Options:
  A) 21
  B) 40
  C) 91
  D) 96
  Show Answer
  The correct answer is C .
• Question 376: A trader sold an article for N4,600.00 thereby making a profit of 15%. Calculate the cost price of the article Options:
  A) N3450.00
  B) N3910.00
  C) N4000.00
  D) N5290.00
  E) N6900.00
  Show Answer
  The correct answer is C .
• Question 377: if x is the addition of the prime numbers between 1 and 6; and y the H.C.F. of 6, 9, 15. Find the product of x and y Options:
  A) 27
  B) 30
  C) 33
  D) 90
  Show Answer
  The correct answer is B .
• Question 378: If 7 and 189 are the first and fourth terms of a geometric progression respectively find the sum for the first
  three terms of the progression Options:
  A) 182
  B) 180
  C) 91
  D) 63
  E) 28
  Show Answer
  The correct answer is C .
• Question 379: If y = x cosx, find $\frac{dy}{dx}$. Options:
  A) cos x - x sinx
  B) sinx - x cosx
  C) sin x + x cosx
  D) cosx + x sin x
  Show Answer
  The correct answer is A .
• Question 380: I how many was can the letters of the word ELATION be arranged? Options:
  A) 6!
  B) 7!
  C) 5!
  D) 8!
  Show Answer
  The correct answer is B .