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प्रश्न
In a leap year the probability of having 53 Sundays or 53 Mondays is ______.
विकल्प
`2/7`
`3/7`
`4/7`
`5/7`
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उत्तर
In a leap year the probability of having 53 Sundays or 53 Mondays is `3/7`.
Explanation:
Since a leap year has 366 days and hence 52 weeks and 2 days.
The 2 days can be SM, MT, TW, WTh, ThF, FSt, StS.
Therefore, P(53 Sundays or 53 Mondays) = `3/7`.
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