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.
There are 4 months that end in the letter Y, January, February, May, and July. The probability, then, of a random month ending in the letter Y is 4 in 12, or 1 in 3, or about 0.3333.
If a 31-day month starts on a Friday, Saturday or Sunday it will have 5 Sundays; if not it will have 4. So the probability is 3/7.
It is 1. Every month contains 28 days.
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 probability is 3/12 or 1/4
If you assume, incorrectly, that birthdays are distributed uniformly across months, then the answer is 2/12 = 0.166... recurring.
There are 4 months that end in the letter Y, January, February, May, and July. The probability, then, of a random month ending in the letter Y is 4 in 12, or 1 in 3, or about 0.3333.
The probability is approx 15/16.
Since every month except May, June, July and August has a R in its name, the odds of someone born in a month whose name contains an R is roughly 2/3. The exact number is closer to 66.32% (242.2425 ÷ 365.2425).
It's the probability that I will take another breath of air, or the probability that tomorrow will come, or the probability that the moon will go through all its phases for the next month.
If a 31-day month starts on a Friday, Saturday or Sunday it will have 5 Sundays; if not it will have 4. So the probability is 3/7.
It is 1. Every month contains 28 days.
The probability is 1.
It is 7/12.
Using probability If 400 people walk through the door in a month what is your total expected profit?