Mathematics, 23.10.2020 14:00 Jasten
A school has an unreliable clock in its tower. The probabilities of gain and loss in the clock in any 24-hour period are given in this table.
Gain of 1 minute No change Loss of 1 minute
Probability 1/2 1/3 1/6
If the clock is set to the correct time at noon on Sunday, find the probability of these events:
(a)The clock is correct at noon on Tuesday.
(b)The clock is not slow at noon on Wednesday.
Answers: 1
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