Absolute certainty
First we don't consider leap year There is 1 month with 28 days: february There are 4 months with 30 days: april, june, september, november So the probability to select a month with 28 or 30 days is (1+4)/12 = 5/12 If the year is a leap year then the probability is 4/12
There are 12 months to choose from There are 7 months with 31 days in them. The probability of choosing a 31-day month is 7/12.
The simplistic answer is that August will have five Mondays if the month starts on a Saturday, Sunday or Monday. Three days out of the seven so the probability is 3/7 = 0.4286. However, that assumes that any day of the week is equally likely and that is not the case. The impact of leap years and their 2800-year cycle is to increase the probability to 0.43
It is a certainty. There will always be at least one month that will meet the requirement.
The probability is 1. It is always raining - any time of the day or night, any day of the year - somewhere on Earth.
First we don't consider leap year There is 1 month with 28 days: february There are 4 months with 30 days: april, june, september, november So the probability to select a month with 28 or 30 days is (1+4)/12 = 5/12 If the year is a leap year then the probability is 4/12
There are 12 months to choose from There are 7 months with 31 days in them. The probability of choosing a 31-day month is 7/12.
you wont get your birthday every year
there are 4 monthes that has 30 days each year there are 12 monthes each year. so the probabillity for picking a month that has 30 days in it is 4/12
There are 30 days in a month and 365 days in a year (366 leap year).
There are seven days in a week, 28-31 days in a month, depending on the year and month, and approximately 365.24 days in a year.
February is the second month of the year, which has 28 days in a common year and 29 days in a leap year.
A long year is 366 days, a long month is 31 days.
The last month of the year is December, which has 31 days.
The simplistic answer is that August will have five Mondays if the month starts on a Saturday, Sunday or Monday. Three days out of the seven so the probability is 3/7 = 0.4286. However, that assumes that any day of the week is equally likely and that is not the case. The impact of leap years and their 2800-year cycle is to increase the probability to 0.43
JuneThe second month of the year that has 30 days is June.
It is a certainty. There will always be at least one month that will meet the requirement.