What are the odds of having same birthday as someone?
What’s the chance that two people share the same birthday? The first person can be born on any day of the year, this means that the probability is 365/365 = 1. The second person has to be born on the same day as the first and there is a 1/365 chance of that happening.
What are the odds of meeting someone with the same birthday and year?
7 Answers. Show activity on this post. For any one relationship, the odds of sharing the same month and day are approximately 1 in 365 (not exactly because of leap year and because births are not exactly evenly spaced within a year.
How many people would need to be in the room to have a 50% chance of sharing a birthday with someone else?
23 people
We are all players in the Birthday Paradox If there are 23 people in the same room, there is a 50/50 chance that two people have the same birthday. Sounds a bit surprising, but it’s mathematically true! In a room with a certain number of randomly chosen people, a pair of them will probably be born on the same day.
What does birthday paradox mean?
In probability theory, the birthday problem asks for the probability that, in a set of n randomly chosen people, at least two will share a birthday. The birthday paradox is that, counterintuitively, the probability of a shared birthday exceeds 50% in a group of only 23 people.
Is there a day nobody was born?
Every January 7th, Will is forced to celebrate his birthday in the most peculiar fashion but it is not his proud parents who are planning these bizarre parties. The twisted minds behind the world’s biggest media company, ViewYou, are pulling the strings.
What day were no people born on?
January 7th: The Day Nobody Was Born.
What is the birthday compatibility between two persons?
The birthday compatibility depends only on the difference between the dates of birth, thus remains stable through lifetime. For two persons that have been born on the same day, the birthday compatibility is 100%. This calculator is based on the biorhythm theory to calculate the birthday compatibility between two persons.
What are the chances of two people having the same birthday?
The reason this is so surprising is because we are used to comparing our particular birthdays with others. For example, if you meet someone randomly and ask him what his birthday is, the chance of the two of you having the same birthday is only 1/365 (0.27%).
What is the probability of a match being more than 50%?
, a similar calculation shows that for leap years, the number of people required for the probability of a match to be more than 50% is also 23; the probability of a match in this case is 50.6%. The Taylor series expansion of the exponential function (the constant e ≈ 2.718 281 828 )
Can two people with the same birthday have the same Nth?
The equation expresses the fact that the first person has no one to share a birthday, the second person cannot have the same birthday as the first (364365), the third cannot have the same birthday as either of the first two (363365), and in general the nth birthday cannot be the same as any of the n − 1 preceding birthdays.