Mathematics 2020 Past Questions | JAMB
Study the following Mathematics past questions and answers for JAMB, WAEC 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
- 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
- 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.
- 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
