Problem Teachers' Notes Hint Solution

1/3 of a turn anticlockwise or 120°

2/3 of a turn clockwise or 240°

0 to 5 on the second dial is;

5/8 of a turn anticlockwise or 225°

3/8 of a turn clockwise or 135°

The next 3 are;

1/4 turn, a right angle, 90° anticlockwise OR 3/4 turn, 3 right angles, 270° clockwise

1/3 turn, 120° anticlockwise OR 2/3 turn, 240° clockwise

1/4 turn, a right angle, 90° anticlockwise OR 3/4 turn, 3 right angles, 270° clockwise

Last 5;

A/ 9/24 [or equivalent] , 135° anticlockwise OR 15/24 [or equivalent] , 215° clockwise

B/ 3/4, 270° anticlockwise OR 1/4, 90° clockwise

C/ 2/3, 240° anticlockwise OR 1/3, 120° clockwise

D/ 5/12, 150° anticlockwise OR 7/12, 210° clockwise

E/ 5/9, 200° anticlockwise OR 4/9, 160° clockwise.