What is the probability that at least two persons have the same birthday?

a 50 percent
You can test it and see mathematical probability in action! The birthday paradox, also known as the birthday problem, states that in a random group of 23 people, there is about a 50 percent chance that two people have the same birthday.

How likely have at least two of 23 students birthday on the same day?

A Fifty-Fifty Chance Many people are surprised to find that if you repeat this calculation with a group of 23 people you’ll still have a 50\% chance that at least two people were born on the same day.

How many people are needed so that the probability that at least one of them has the same birthday as you is greater than 1 2?

The number of people needs to be a whole number. So the smallest hole number, which is greater than 252.65, is 253. So that means that the number of people needed so that the probability that at least one of them has the same birthday as you is greater than half will be Equal to 253.

What is the probability that 3 persons have same birthday?

Then this approximation gives (F(2))365≈0.3600, and therefore the probability of three or more people all with the same birthday is approximately 0.6400.

How common is each birthday?

How common of a birth date is each day in the calendar year?

Birth Date	Popularity	Average Births
1/1	365th	7,792
1/2	362nd	9,307
1/3	306th	10,813
1/4	209th	11,019

What’s the least common birthday?

Christmas Day
According to the chart, Christmas Day is the least common birthday, followed by New Years Day, and Christmas Eve and the 4th of July. There are also fewer birthdays on the 13th of each month, as compared to the 12th and 14th. September 11th is noticeably lower than birthdays around it as well.

What are the odds of being the only one with birthday?

Because if you consider one person, the odds of being the only one with that birthday is 365 over 365 of course. If a new person arrives, then one birthday is already busy and he has only 364 different birthdays available different from the first one. Going on 41 times, considering also the guy who is partying, you find the previous probability.

What is the meaning of various probability?

/ Various probability Calculates a table of the probability that one or more pairs in a group have the same birthday and draws the chart. n persons in a group (1) the probability that all birthdays of n persons are different.

What is the probability of being born on February 29th?

Leap years only happen every fourth year (more or less), so the probability that a person was born on February 29 is 1/1461 and the probability of every other day would be 4/1461.

What is same birthday probability (chart) calculator?

Calculates a table of the probability that one or more pairs in a group have the same birthday and draws the chart. Same birthday probability (chart) Calculator – High accuracy calculation

https://www.youtube.com/watch?v=raQLAh7RrE8