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 1431: An operation * is defined on the set of real numbers by a * b = ab + 2(a + b + 1). find the identity elements Options:
  A) 2
  B) 1
  C) -1
  D) -2
  Show Answer
  The correct answer is C .
• Question 1432:

  

  Find the value of x in the figure above.

  Options:
  A) 20$\sqrt{3}$cm
  B) 10$\sqrt{3}$cm
  C) 5$\sqrt{3}$cm
  D) 4$\sqrt{3}$cm
  Show Answer
  The correct answer is B .
• Question 1433:

  Evaluate $\frac{2\sin 30+5\tan 60}{\sin 60}$, leaving your answer in surd form.

  Options:
  A) $\frac{2\sqrt{3}}{3}+10$
  B) $\frac{3\sqrt{2}-1}{5}$
  C) $\frac{3\sqrt{2}+1}{5}$
  D) $\frac{2\sqrt{3}}{3}-10$
  Show Answer
  The correct answer is A .
• Question 1434: Of the nine hundred students admitted in a university in 1979, the following was the distribution by state: Anambrs 185, Imo 135, Kaduna 90, Kwara 110, Ondo 155, Oyo 225. In a pie chart drawn to represent this distribution, The angle subtended at the centre by anambra is Options:
  A) 50^o
  B) 65^o
  C) 74^o
  D) 88^o
  Show Answer
  The correct answer is C .
• Question 1435:

  

  PMN and PQR are two secants of the circle MQTRN and PT is a tangent. If PM = 5cm, PN = 12cm and PQ = 4.8cm, calculate the respective lengths of PR and PT in centimeters

  Options:
  A) 7.3, 5.9
  B) 7.7, 12.5
  C) 12.5, 7.7
  D) 5.9, 7.3
  Show Answer
  The correct answer is C .
• Question 1436: Find the radius of a sphere whose surface area is 154 cm² Options:
  A) 7.00 cm
  B) 3.50 cm
  C) 3.00 cm
  D) 1.75 cm
  Show Answer
  The correct answer is B .
• Question 1437:

  Evaluate:

  (0.21 x 0.072 x 0.00054) (0.006 x 1.68 x 0.063), correct to 4.s.f

  Options:
  A) 0.01286
  B) 0.01285
  C) 0.1286
  D) 0.1285
  Show Answer
  The correct answer is A .
• Question 1438: Find the sum of the first 20 terms of the series 8, 12, 16, ....., 96 Options:
  A) 1400
  B) 1040
  C) 960
  D) 920
  Show Answer
  The correct answer is B .
• Question 1439: If $\sqrt{3^x}$ = $\sqrt{9}$ then the value of x is: Options:
  A) $\frac{3}{4}$
  B) $\frac{4}{3}$
  C) $\frac{1}{3}$
  D) $\frac{2}{3}$
  E) $\frac{1}{2}$
  Show Answer
  The correct answer is E .
• Question 1440: Make c the subject of formula v = 1 - $\frac{a}{5}$(b + $\frac{3c}{7}$) Options:
  A) [$\frac{7}{3}$ + $\frac{5}{a}$(v - 1)] + b
  B) [$\frac{7b}{3}$ + $\frac{5}{a}$(v - 1)]
  C) $\frac{7}{3}$[b + $\frac{5}{a}$(v - 1)]
  D) $\frac{7}{3}$[b + $\frac{5v-1}{a}$]
  Show Answer
  The correct answer is A .