Mathematics

Mathematics, 24.07.2019 14:00, HaJEReMY5170

What is the probability that two people have a birthday on the same day of the same month?

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Mathematics, 27.06.2019 12:10, lucky1silky

Consider the experiment, called the birthday problem , where our task is to determine the probability that in a group of people of a certain size there are at least two people who have the same birthday (the same month and day of month). suppose there is a room with 9 people in it, find the probability that at least two people have the same birthday. ignore leap years; assume each year has 365 days.

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Mathematics, 27.06.2019 18:50, 6224968918

Three or more people having the same birthday. i am trying to determine the probability of three people having the same birthday when chosen from a group of "n" people. i have calculated that in a group of 23 people, the probability is greater than 50 per cent that at least 2 of those people will have the same birthday (and the calculations are here: ) i know the number of people required is 88 for 3 people, 187 for 4, 313 for 5, etc. (the link for that information is ~fcale/ccc/dc.pdf) anyway, when i use the attached formula, it becomes inaccurate when the number of people required is 6 or greater. does anyone know if there is a better equation (or method) to use when calculating this?

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Mathematics, 10.10.2019 04:00, BlackMilkTea

Consider the experiment, called the birthday problem , where our task is to determine the probability that in a group of people of a certain size there are at least two people who have the same birthday (the same month and day of month). suppose there is a room with 9 people in it, find the probability that at least two people have the same birthday. ignore leap years; assume each year has 365 days.

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Mathematics, 18.10.2019 20:10, sykirahopper123

Determine the probability that at least 2 people in a room of 11 people share the same birthday, ignoring leap years and assuming each birthday is equally likely, by answering the following questions. a. compute the probability that 11 people have different birthdays b. the complements of 11 people have different birthdays is at least 2 share a birthday. use this information to compute the probability that at least 2 people out of 11 people share the same birthday.

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