Clock based puzzles

Answer :5:19
Explanation :Starting with the watch on the left, add 42 minutes to the time shown to give the time on the next watch to the right.

Answer : Hand pointing to 5
Explanation : Starting with the top clock and moving anti-clockwise around the others, the hour hand moves back 1 hour, then 2, then 3 etc, while the minute hand moves forward 10 minutes each time.

Answer : To the 4
Explanation : Start with the top left clockface, and move around the others in a clockwise direction. The value pointed to by the hour hand equals the value pointed to by the minute hand, subtracting 4 for the first clockface, 5 for the next, then 6 etc.

Answer : 5:23
Explanation : The sum of the separate digits on each watch increases by 2 as you move to the right.

Answer : Hour hand is pointing to 2.
Explanation : Multiply the hour hand value by 2 and add the minute h
and value. This total is always 15.