find the probability of having 53 Fridays in a year
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Every leap year has 366 days. This means that there are 5 weekdays that occur 52 times and 2 weekdays that appear 53 times. Using a simple model, all weekdays are the same so by symmetry every weekday has a 2/7 chance of occurring 53 times.
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Total outcomes=7
Possible outcomes (for 53 fridays)=1
Therefore probability =1÷7
Possible outcomes (for 53 fridays)=1
Therefore probability =1÷7
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