1) एका साधारण वर्षात 53 रविवार येण्याची संभाव्यता काढा
Answers
Given : a normal year
एका साधारण वर्ष
To Find : probability of 53 Sundays in a normal year
53 रविवार येण्याची संभाव्यता
Solution:
365 days in a normal year
365 = 52 x 7 + 1
52 sundays in 52 weeks
and remaining 1 day can ba any 1 day of 7 days of weeks
Hence probability of 53 sunday = 1/7
probability of 53 Sundays in a normal year = 1/7
एका साधारण वर्षात 53 रविवार येण्याची संभाव्यता = 1/7
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Given :- Find the probability of 53 sundays in a normal year.
Solution :-
we know that,
- Normal year has total 365 days.
- Leap year has total 366 days. {In february we have 29 days.}
so,
→ 365 days = 7 * 52 + 1 day = 52 weeks + 1 day .
Conclusion :-
- In 52 weeks we have 52 sunday .
- 1 day = Any day of the week . { Depends on the first day of the year .}
we can conclude that, the probability of 53 sundays in a normal year depends on the left 1 day .
therefore,
→ Required probability = ( 1 / 7 ) (Ans.)
Hence, the probability of 53 sundays in a normal year is (1/7) .
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