Mathematics 2020 Past Questions | JAMB

Study the following Mathematics past questions and answers for JAMBWAEC  NECO and Post-JAMB. Get prepared with official past questions and answers for upcoming examinations.

16. A crate of soft drinks contains 10 bottle of Coca-Cola 8 of Fanta and 6 of Sprite. If one bottle is selected at random, what is the probability that it is Not a Coca-Cola bottle? 

  • A. 5/12
  • B. 1/3
  • C. 3/4
  • D. 7/12

17.  In this figure, PQ = PR = PS and SRT = 68o. Find QPS

Q17

  • A. 136o
  • B. 124o
  • C. 112o
  • D. 68o

18. Find the gradient of the line passing through the points (-2, 0) and (0, 4) 

  • A. 2
  • B. -4
  • C. -2
  • D. 4

19. Find the equation of the line through the points (5, 7) parallel to the line 7x + 5y = 12.

  • A. 5x + 7y = 120
  • B. 7x + 5y = 70
  • C. x + y = 7
  • D. 15x + 17y = 90

20.  If N225.00 yields N27.00 in x years simple interest at the rate of 4% per annum, find x. 

  • A. 3
  • B. 4
  • C. 12
  • D. 17

21.  Calculate the standard deviation of the following data: 7, 8, 9, 10, 11, 12, 13 

  • A. 2
  • B. 4
  • C. 12
  • D. 17

22.  A number is selected at random between 20 and 30, both numbers inclusive. Find the probability that the number is a prime. 

  • A. 2/11
  • B. 5/11
  • C. 6/11
  • D. 8/11

23. The equation of the line in the graph is 

Q23

  • A. 3y = 3x + 12
  • B. 3y = 3x + 12
  • C. 3y = -4x + 12
  • D. 3y = -4x + 9

24.  Express the product of 0.0014 and 0.011 in standard form 

  • A. 1.54 x 10−2
  • B. 1.54 x 10−3
  • C. 1.54 x 10−2
  • D. 1.54 x 10−5

25. A school boy lying on the ground 30m away from the foot of a water tank towel observes that the angle of elevation of the top of the tank is 60o. Calculate the height of the tank.

  • A. 60√3m
  • B. 30√3m
  • C. 20√3m
  • D. 10√3m

26. Find the simple interest rate percent annum at which N1000 accumulates to N1240 in 3 years. 

  • A. 6%
  • B. 8%
  • C. 10%
  • D. 12%

27.  The pie chart shows the income of a civil servant in month. If his monthly income is N6,000. Find his monthly basic salary.

Q27 

  • A. N2,050
  • B. N2600
  • C. N3,100
  • D. N3,450

 

28. If x is positive real number, find the range of values for which 1/3x + 1/2> 1/4x

  • A. x > -1/6
  • B. x > 0
  • C. 0 < x < 6
  • D. 0 < x <1/6

29.  Find the value of x if = √2 / x +  √2 = 1/  x – √2                          

  • A. 3√2 + 4
  • B. 3√2 – 4
  • C. 3 – 2√2
  • D. 4 + 2√2

30. A binary operation x is defined by a x b = ab. If a x 2 = 2 – a, find the possible values of a?

  • A. 1, -2
  • B. 2, -1
  • C. 2, -2
  • D. 1, -1
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