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 991:

  Rationalise $\frac{2\sqrt{3}+\sqrt{5}}{\sqrt{5}-\sqrt{3}}$

  Options:
  A) (3 √ 15 +11) / 2
  B) 3 √ 15 -11
  C) (3 √ 15 -11) / 2
  D) 3 √ 15 +11
  Show Answer
  The correct answer is A .
• Question 992: Two distinct sectors in the same circle subtend 100${}^{\circ }$ and 30${}^{\circ }$ respectively at the centre of the circle. Their corresponding arcs are in the ratio
  Options:
  A) 1:100
  B) 3:1
  C) 5:2
  D) 10:3
  E) 13:30
  Show Answer
  The correct answer is D .
• Question 993: 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 994: A man invested a sum of ₦280.00 partly at 5% and partly at 4%, if the total interest is ₦12.80 per annum, find the amount invested at 5%. Options:
  A) ₦14.00
  B) ₦120.00
  C) ₦140.00
  D) ₦160.00
  Show Answer
  The correct answer is D .
• Question 995: Evaluate log_baⁿ if b = aⁿ Options:
  A) nⁿ
  B) n
  C) $\frac{1}{n}$
  D) $\frac{1}{n^2}$
  Show Answer
  The correct answer is B .
• Question 996: Convert 3.1415926 to 5 decimal places Options:
  A) 3.14160
  B) 3.14159
  C) 0.31415
  D) 3.14200
  Show Answer
  The correct answer is B .
• Question 997:

  

  In the diagram, XZ is the diameter of a circle's radius $\frac{5}{2}$. If XY is 4cm, then the area of the triangle XYZ is

  Options:
  A) 12cm²
  B) 28$\frac{1}{2}$cm²
  C) 16cm²
  D) 10cm²
  E) 6cm²
  Show Answer
  The correct answer is E .
• Question 998: Simplify the given expression $\sqrt{\frac{1-cosx}{1+cosx}}$ Options:
  A) $\frac{1-cosx}{sinx}$
  B) 1 - cos x
  C) sin x
  D) 1 + cos x
  E) $\frac{1+cosx}{sinx}$
  Show Answer
  The correct answer is A .
• Question 999:

  Simplify 2log $\frac{2}{5}$ - log$\frac{72}{125}$ + log 9

  Options:
  A) 1 - 4 log3
  B) -1 + 2 log 3
  C) -1 + 5 log2
  D) 1 - 2log 2
  Show Answer
  The correct answer is D .
• Question 1000:

  

  The mean and the range of the set of numbers 1, 20, 1.00, 0.90, 1.40, 0.80, 1.20 and 1.10 are me and r

  Options:
  A) 1.11
  B) 1.65
  C) 1.85
  D) 2.45
  Show Answer
  The correct answer is B .