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In a piece for the Financial Times (10 August 2018) titled "Why drink is the secret to humanity's success", Dunbar mentioned two more numbers: an inner core of about 5 people to whom we devote about 40 percent of our available social time and 10 more people to whom we devote another 20 percent. All in all, we devote about two-thirds of our time ...
On average, about 50% of people on the service at that time were only four steps away from each other, while nearly everyone was five steps or less away. [ 41 ] In a 2011 work, researchers showed that the average distance of 1,500 random users on the site was 3.435, at that time.
In his article, Miller discussed a coincidence between the limits of one-dimensional absolute judgment and the limits of short-term memory. In a one-dimensional absolute-judgment task, a person is presented with a number of stimuli that vary on one dimension (e.g., 10 different tones varying only in pitch) and responds to each stimulus with a corresponding response (learned before).
For a greater than 50% chance that at least one other person in a roomful of n people has the same birthday as you, n would need to be at least 253. This number is significantly higher than 365 / 2 = 182.5 : the reason is that it is likely that there are some birthday matches among the other people in the room.
The AI revolution has already minted dozens of unicorns—startups valued at $1 billion before going public. Now it could create a whole new type of startup: the one-person unicorn.
A person is given two indistinguishable envelopes, each of which contains a sum of money. One envelope contains twice as much as the other. The person may pick one envelope and keep whatever amount it contains. They pick one envelope at random but before they open it they are given the chance to take the other envelope instead. [1]
In Japanese numerals, distributive forms are formed regularly from a cardinal number, a counter word, and the suffix -zutsu (ずつ), as in hitori-zutsu (一人ずつ, one person at a time, one person each).
The fundamental theorem can be derived from Book VII, propositions 30, 31 and 32, and Book IX, proposition 14 of Euclid's Elements.. If two numbers by multiplying one another make some number, and any prime number measure the product, it will also measure one of the original numbers.