**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. 30_{five}

B. 100_{five}

C. 110_{five}

D. 128_{five}

**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 cm^{2}, 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 |