WebJan 13, 2011 · the number of ways N people can all NOT have the same birthday = 365 * 364 * 363 * (365 - n + 1) so the probability no two people have the same birthday is. 365 * 364 * ..... (365 - n + 1) / 365 ^ n. The probability two people do have the same birthday is 1 - the previous equation. with 23 people , the probability is 50.73%. 1 Reply. WebOr another way you could write it as that's 1 minus 0.2937, which is equal to-- so if I want to subtract that from 1. 1 minus-- that just means the answer. That means 1 minus 0.29. …
What is the probability that you would share a birthday with ... - Quora
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Shared Birthdays - Math is Fun
WebSep 29, 2004 · If you are only looking at the chances that someone else has the same birthday as you, you need to have a group of 253 other people for there to be more than a 50% chance that someone else shares your birthday. (364/365)^252 = 0.500895161. (364/365)^253 = 0.499522846. That’s assuming that there are only 365 days in a year – … WebTherefore Prob (no shared birthday) = 365/365 x 364/365 = 99.73%. Either there is a shared birthday or there isn't, so together, the probabilities of these two events must add up to 100% and so: Prob (shared birthday) = 100% - 99.73% = 0.27%. (Of course, we could have calculated this answer by saying the probability of the second person having ... WebMay 17, 2024 · For many people, sharing a birthday with someone provides various sensations. Some feel excitement and happiness knowing that they are in the presence … farry \\u0026 co lawyers