Puzzle – 1: What time should the last watch show? Answer: 7:05

Explanation: As you move from left to right, the time shown on each watch decreases by 12 minutes, then 24, 36 and 48.

Puzzle – 2: Where should the hour hand point to on the bottom clock?Answer: Hour hand points to 8

Explanation: Starting with the top clock face, and moving clockwise around the others, the minute hand moves forward 15 minutes, while the hour hand moves back 2 hours each time.

Puzzle – 3: Where should the missing hour hand point to?Answer: To the 6

Explanation: Starting with the top left clock face and working clockwise around the others, the sum of the numbers pointed to by the 2 hands starts at 3 and increases by 2 each time.

Puzzle – 4: Where should the minute hand point to on the bottom clock?Answer: To the 4

Explanation: Starting with the top clock face and moving clockwise around the others, the minute hand points to the value 3 less than that pointed to by the hour hand. Repeat for the other clock faces, subtracting 4, 5 and 6 from the hour hand values.

Puzzle – 5: Where should the minute hand point to on the bottom clock?Answer: To the 5

Explanation: Start with the top left clock face and move clockwise around the others. The sum of the numbers pointed to by the hour and minute hand follows the sequence 3, 6, 9, 12 and 15.