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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 refers to the counterintuitive fact that only 23 people are needed for that probability to exceed 50%. The birthday paradox is a veridical paradox: it seems wrong at first ...
Proofs. [edit] The birthday attack is a method that exploits the mathematics of collisions in hash functions. Below, we provide upper and lower bounds for the probability of a collision, based on the analogy of the balls and bins problem, and derive key equations.
An overcrowded household is defined as one which has fewer rooms than the sum of: [7] one room for the household; one room per couple in the household; one room for each single person aged 18 or more; one room per pair of single people of the same gender between 12 and 17 years of age;
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The birthday effect (sometimes called the birthday blues, especially when referring specifically to suicide) is a statistical phenomenon where an individual's likelihood of death appears to increase on or close to their birthday. The birthday effect has been seen in studies of general populations in England and Wales, [1] Switzerland, [2][3 ...
No, they're not quadruplets. Each girl was born on the same day, exactly three years apart. That's right — Sophia, 9, Giuliana, 6, Mia, 3, and Valentina, 2.5 weeks old — have the exact same ...
132 hostages killed, over 700 injured. The Moscow theater hostage crisis (also known as the 2002 Nord-Ost siege) was the seizure of the crowded Dubrovka Theater in Moscow by Chechen terrorists on 23 October 2002, resulting in the taking of 912 hostages. The attackers, led by Movsar Barayev, claimed allegiance to the Islamist separatist movement ...
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