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A mechanical clock with a twelve o'clock dial broke down at some point and stopped going. Find the probability that the hour hand stopped when it reached the 10 mark, but did not reach the 1 mark.

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answers: 1
Expert:

There are three hour divisions on the dial between ten o'clock and one o'clock. There are a total of 12 hour divisions on the dial. Therefore, the desired probability is:

3/12 = 1/4 =0.25.

Answer: 0.25.

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