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Math Waec 2021

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Question 1 of 49
1. Question
Correct 0.007985 to three significant figures.
- 0.0109
- 0.0800
- 0.00799
- 0.008
Correct
Incorrect
Question 2 of 49
2. Question
Correct
Incorrect
Question 3 of 49
3. Question
- 13
- 24
- 12
- 11
Correct
Incorrect
Question 4 of 49
4. Question
- 3m + n
- m + 3n
- 4mn
- 3mn
Correct
Incorrect
Question 5 of 49
5. Question
Find the 5th term of the sequence 2,5,10,17....?
- 22
- 24
- 36
- 26
Correct
Incorrect
Question 6 of 49
6. Question
if p = {-3<x<1} and Q = {-1<x<3}, where x is a real number, find P n Q.
- 0
- -3, -2, -1, 0 and 1
- -2, -1 and 0
- -1, 0 and 1
Correct
Incorrect
Question 7 of 49
7. Question
Factorize 6pq-3rs-3ps+6qr.
- 3(r -p)(2q + s)
- 3(p + r)( 2q - 2q - s)
- 3(2q - s)(p + r)
- 3(r - p)(s - 2q)
Correct
Incorrect
Question 8 of 49
8. Question
Correct
Incorrect
Question 9 of 49
9. Question
Mensah is 5 years old and joyce is thrice as old as mensah. In how many years will joyce be twice as old as Mensah?
- 3 years
- 10 years
- 5 years
- 15 years
Correct
Incorrect
Question 10 of 49
10. Question
- -4
- 4
- 1
- -1
Correct
Incorrect
Question 11 of 49
11. Question
The circumference of a circular track is 9km. A cyclist rides round it a number of times and stops after covering a distance of 302km. How far is the cyclist from the starting point?
- 5km
- 6km
- 7km
- 3km
Correct
Incorrect
Question 12 of 49
12. Question
Correct
Incorrect
Question 13 of 49
13. Question
If 4x+2y=16 and 6x-2y=4 , find the value of (y-x).
- 8
- 2
- 4
- 6
Correct
Incorrect
Question 14 of 49
14. Question
In the diagram, ∠ABC and ∠BCD are right angles, ∠BAD = t and ∠EDF = 70°. Find the value of t.
- 70°
- 165°
- 140°
- 110°
Correct
Incorrect
Question 15 of 49
15. Question
The sum of the interior angles of a regular polygon with k sides is (3k-10) right angles. Find the size of the exterior angle?
- 60°
- 40°
- 90°
- 120°
Correct
Incorrect
Question 16 of 49
16. Question
Correct
Incorrect
Question 17 of 49
17. Question
A trader paid import duty of 38 kobo in the naira on the cost of an engine. If a total of #22,800.00 was paid as import duty, calculate the cost of the engine.
- #60,000.00
- #120,000.00
- #24,000.00
- #18,000.00
Correct
Incorrect
Question 18 of 49
18. Question
The height of an equilateral triangle of side is 10 √3 cm. calculate its perimeter.
- 20cm
- 60cm
- 40cm
- 30cm
Correct
Incorrect
Question 19 of 49
19. Question
In △LMN, |LM| = 6cm, ∠LNM = x and sin x = sin x = $\frac{3}{5}$ .
Find the area of △LMN.
- 60cm^2
- 48cm^2
- 24cm^2
- 30cm^2
Correct
Incorrect
Question 20 of 49
20. Question
Consider the statements:
P = All students offering Literature(L) also offer History(H);
Q = Students offering History(H) do not offer Geography(G).
Which of the Venn diagram correctly illustrate the two statements?
- A
- B
- C
- D
Correct
Incorrect
Question 21 of 49
21. Question
Find The quadratic Equation Whose Roots Are -2q And 5q.
- 3x^2 + 3qx - 10q^2
- x^2 + 3qx + 10q^2
- x^2 - 3qx + 10q^2
- x^2 - 3qx - 10q^2
Correct
Incorrect
Question 22 of 49
22. Question
if tanθ = $f r a c 34$ , 180° < θ < 270°, find the value of cosθ.
- 4/5
- 3/5
- -4/5
- -3/5
Correct
Incorrect
Question 23 of 49
23. Question
- 5 - x
- - (x + 5)
- 13 - x
- - (5x - 13)
Correct
Incorrect
Question 24 of 49
24. Question
The diagonal of a rhombus are 12cm and 5cm. calculate its perimeter.
- 26cm
- 24cm
- 17cm
- 34cm
Correct
Incorrect
Question 25 of 49
25. Question
In the diagram, △XYZ is produced to T. if |XY| = |ZY| and ∠XYT = 40°, find ∠XZT.
- 110°
- 130°
- 140°
- 180°
Correct
Incorrect
Question 26 of 49
26. Question
A solid brass cube is melted and recast as a solid cone of height h and base radius r. If the height of the cube is h, find r in terms of h.
Correct
Incorrect
Question 27 of 49
27. Question
Which of the following is not an exterior angle of a regular polygon?
- 66°
- 72°
- 24°
- 15°
Correct
Incorrect
Question 28 of 49
28. Question
From a point T, a man moves 12km due west and then moves 12km due south to another point Q. Calculate the bearing of T from Q.
- 225°
- 315°
- 045°
- 135°
Correct
Incorrect
Question 29 of 49
29. Question
In the diagram, O is the centre of the circle PQRS, ∠PQR = 72° and OR is parallel to PS. Find ∠ OPS.
- 18°
- 108°
- 54°
- 36°
Correct
Incorrect
Question 30 of 49
30. Question
A trapezium of parellel sides 10cm and 21cm and height 8cm is inscribed in a circle of radius 7cm. calculate the area of the region not covered by the trapezium. [π = $\frac{22}{7}$
- 84cm^2
- 80cm^2
- 30cm^2
- 94cm^2
Correct
Incorrect
Question 31 of 49
31. Question
- 3.71
- 3.70
- 3.69
- 3.72
Correct
Incorrect
Question 32 of 49
32. Question
A cyclist moved at a speed of Xkm/h for 2 hours. He then increased his speed by 2 km/h for the next 3 hours.
If the total distance covered is 36 km, calculate his initials speed.
- 12km/h
- 3km/h
- 4km/h
- 6km/h
Correct
Incorrect
Question 33 of 49
33. Question
Find the value of (x+y).
- 215°
- 70°
- 135°
- 145°
Correct
Incorrect
Question 34 of 49
34. Question
In the diagram, $\bar{M P}$ is a tangent to the circle NQR, ∠NQR, ∠PNQ = 64 and | $\bar{R Q}$ | = | $\bar{R N}$ |. Find the angle market t.
- 130°
- 115°
- 58°
- 68°
Correct
Incorrect
Question 35 of 49
35. Question
Find the first quartile of 7,8,7,9,11,8,7,9,6 and 8.
- 8.5
- 7.0
- 7.5
- 8.0
Correct
Incorrect
Question 36 of 49
36. Question
In the diagram, PQRS is a circle. find the value of x.
- 50°
- 30°
- 80°
- 100°
Correct
Incorrect
Question 37 of 49
37. Question
A cone has a base radius of 8cm and height 11cm. calculate , correct to 2d.p, the curved surface area.
- 341.98cm^2
- 276.57cm^2
- 201.14cm^2
- 477.71cm^2
Correct
Incorrect
Question 38 of 49
38. Question
Given that sin x = $\frac{3}{5}$ , 0 ≤ x ≤ 90, evaluate (tan x + 2cosx).
Correct
Incorrect
Question 39 of 49
39. Question
In the diagram, line $\bar{E C}$ is a diameter of the circle ABCDE.
If angle ABC equals 158°, find ∠ADE.
- 112
- 90
- 68
- 22
Correct
Incorrect
Question 40 of 49
40. Question
the table shows the height of 37 players of a basketball team calculates correct to one decimal place the mean height of the players.
- 163.0
- 162.0
- 160.0
- 165.0
Correct
Incorrect
Question 41 of 49
41. Question
$\bar{X Y}$ is a line segments with the coordinates X (- 8,- 12) and Y(p,q). if the midpoint of $\bar{X Y}$ is (-4,-2) find the coordinates of Y.
- (-6,-2)
- (0,8)
- (4,10)
- (0,4)
Correct
Incorrect
Question 42 of 49
42. Question
500 tickets were sold for a concert tickets for adults and children were sold at $4.50 and $3.00 respectively if the total receipts for the concerts was $1987.50 how many tickets for adults were sold?
- 325
- 235
- 175
- 400
Correct
Incorrect
Question 43 of 49
43. Question
The distance d between two villages east more than 18 KM but not more than 23KM.
which of these inequalities represents the statements?
- 18 ≤ d ≤ 23
- 18 < d < 23
- 18 ≤ d < 23
- 18 < d ≤ 23
Correct
Incorrect
Question 44 of 49
44. Question
The pie chart represents the distribution of fruits on display in the shop if there are 60 apples on display how many oranges are there?
- 80
- 270
- 120
- 90
Correct
Incorrect
Question 45 of 49
45. Question
A box contains 40 identical balls of which 10 are red and 12 are blue. if a ball is selected at random from the box what is the probability that it is neither red nor blue?
- 9/20
- 3/10
- 1/4
- 11/20
Correct
Incorrect
Question 46 of 49
46. Question
A fair die is tossed twice what is the probability of get a sum of at least 10.
- 5/36
- 2/3
- 5/18
- 1/6
Correct
Incorrect
Question 47 of 49
47. Question
A man will be (x+10)years old in 8years time. If 2years ago he was 63 years., find the value of x.
- 55
- 63
- 57
- 67
Correct
Incorrect
Question 48 of 49
48. Question
The equation of a line is given as 3 x - 5y = 7. Find its gradient (slope).
- 5/3
- 3/5
- -3/5
- -5/3
Correct
Incorrect
Question 49 of 49
49. Question
For what value of x is ( $\frac{4 - 2 x}{x + 1}$ undefined.
- 2
- -1
- 1
- -2
Correct
Incorrect