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The second hand in a clock is spun and the outcome α is the second where the hand comes to rest.

The second hand in a clock is spun and the outcome α is the second where the hand comes to rest. Let Z
be the minute where the hand comes to rest. Find the pmf of Z. Find the conditional pmf of Z given
A= {first 20 minutes}; given B= {2 ≤ α ≤ 200}

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