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 1391: A sector of angle 120° is cut out from a circle of radius 13.5cm. what area of the circle is remaining ? (π = $\frac{22}{7}$) Options:
  A) 14.1cm²
  B) 95.5cm²
  C) 190.9cm²
  D) 381.9cm²
  E) 763.7cm²
  Show Answer
  The correct answer is D .
• Question 1392: Find the size of each exterior angle of a regular octagon Options:
  A) 51${}^{\circ }$
  B) 45${}^{\circ }$
  C) 40${}^{\circ }$
  D) 36${}^{\circ }$
  Show Answer
  The correct answer is B .
• Question 1393: In ∆MNO, MN = 6 units, MO = 4 units and NO = 12 units. If the bisector of and M meets NO at P, calculate NP. Options:
  A) 4.8 units
  B) 7.2 units
  C) 8.0 units
  D) 18.0 units
  Show Answer
  The correct answer is B .
• Question 1394:

  If log${}_{10}$2 = 0.3010 and log${}_{10}$3 = 0.4771, eventually without using the logarithm tables, log${}_{10}$4.5

  Options:
  A) 0.3010
  B) 0.4771
  C) 0.6532
  D) 0.9542
  Show Answer
  The correct answer is C .
• Question 1395: Find the sum to infinity of the series 1/2 , 1/6, 1/18, ..... Options:
  A) 2/3
  B) 1/3
  C) 3/4
  D) 1
  Show Answer
  The correct answer is C .
• Question 1396:

  How many different 8 letter words are possible using the letters of the word SYLLABUS?

  Options:
  A) (8 - 1)!
  B) $\frac{8!}{2!}$
  C) $\frac{8!}{2!2!}$
  D) 8!
  Show Answer
  The correct answer is C .
• Question 1397:

  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 1398: Evaluate $\frac{21}{9}$ to 3 significant figures Options:
  A) 2.30
  B) 2.31
  C) 2.32
  D) 2.33
  Show Answer
  The correct answer is D .
• Question 1399: Solve for x in 8x^-2 = 2/25 Options:
  A) 4
  B) 6
  C) 8
  D) 10
  Show Answer
  The correct answer is D .
• Question 1400:

  A car travels from calabar to Enugu, a distance of P km with an average speed of U km per hour and continues to benin, a distance of Q km, with an average speed of Wkm per hour. Find its average speed from Calabar to Benin

  Options:
  A) $\frac{(p+q)}{pw+qu}$
  B) $\frac{uw(p+q)}{pw+qu}$
  C) $\frac{uw(p+q)}{pw}$
  D) $\frac{uw}{pw+qu}$
  Show Answer
  The correct answer is B .