31. How many faces has a cuboid?
A. 6
B. 8
C. 12
D. 16
32. Which of the following is a factor of the expression ?
A. c − d
B. c − d
C. a + b
D. a + 2b
33. Three boys weeded a piece of land in 4 hours. How long would it take 18 boys to weed the same piece of land, weeding at the same rate?
34. Find the size of the angle marked "a" in the diagram below.
A. 30°
B. 60°
C. 90°
D. 120°
35. Which of the following is the net of a cube?
Use the mapping below to answer question 36.
36. Find the value of x
A. 30five
B. 100five
C. 110five
D. 128five
37. In the diagram below, find the size of the angle marked "e"
A. 52°
B. 56°
C. 72°
D. 128°
38. If the area of the figure above is 60 cm2, find x.
A. 8 cm
B. 9 cm
C. 12 cm
D. 16 cm
39. The mean of the numbers 4, 3, 3, x is 5. Find x
A. 20
B. 10
C. 5
D. 4
40. If a number is selected at random from the table below, what is the probability that the number is 5?
Number | 1 | 2 | 5 | 7 | 9 |
Frequency | 25 | 15 | 8 | 10 | 2 |