Clock puzzles interview questions

Answer : To the 4Explanation : 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.
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Answer : 5:23
Explanation : The sum of the separate digits on each watch increases by 2 as you move to the right.