If each matchbox contains 48 matchsticks, then the number of matchsticks required to fill n such boxes is

1. 48 + n

2. 48 − n

3. 48 ÷ n

4. 48 n

If the perimeter of a regular hexagon is x metres, then the length of each of its sides is

1. (x + 6) metres

2. (x − 6) metres

3. (x ÷ 6) metres

4. (6 ÷ x) metres

The solution of the equation 3x − 2 = 10 is

1. x = 1

2. x = 2

3. x = 3

4. x = 4