Найдите все конечные множества натуральных чисел, у которых не меньше двух элементов, и для любых двух чисел a и b (a > b) множества, число b^2 / (a - b) тоже лежит а множестве.
Найдите все конечные множества натуральных чисел, у которых не меньше двух элементов, и для любых двух чисел a и b (a > b) множества, число b^2 / (a - b) тоже лежит а множестве.
BY JustScience | Олимпиадная Математика
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The regulator said it had received information that messages containing stock tips and other investment advice with respect to selected listed companies are being widely circulated through websites and social media platforms such as Telegram, Facebook, WhatsApp and Instagram. Perpetrators of such fraud use various marketing techniques to attract subscribers on their social media channels. In December 2021, Sebi officials had conducted a search and seizure operation at the premises of certain persons carrying out similar manipulative activities through Telegram channels. On December 23rd, 2020, Pavel Durov posted to his channel that the company would need to start generating revenue. In early 2021, he added that any advertising on the platform would not use user data for targeting, and that it would be focused on “large one-to-many channels.” He pledged that ads would be “non-intrusive” and that most users would simply not notice any change. On Feb. 27, however, he admitted from his Russian-language account that "Telegram channels are increasingly becoming a source of unverified information related to Ukrainian events."
from tw
