Find the probability of getting Fridays in a leap year
Step 1: Determine the possible outcomes
We know that, the total number of days in a leap year
Since there are complete in a year,
So, the occurrence of Fridays in a year is confirmed.
Now, since there are extra days in a leap year.
Then, there are only two possibilities that one of these two days is a Friday.
i.e., (Thursday, Friday) and (Friday, Saturday)
Step 2: Apply the formula of probability
Here, it is clear that,
Total possible outcomes (Monday, Tuesday), (Tuesday, Wednesday),(Wednesday, Thursday), (Thursday, Friday), (Friday, Saturday) ,(Saturday, Sunday) and (Sunday, Monday)
Total possible outcomes
And, the number of favourable outcomes
Probability of an event
Probability of getting Fridays in a leap year
Hence, the probability of getting Fridays in a leap year is .