How do you get the right solution, especially without a calculator?

In a deck of cards, there are 52 cards, which are divided evenly among four players (A, B, C, and D). Each player receives a hand of 13 cards. Player A wants to know the probability of having at least one ace in his hand. Which of the following probabilities is closest to the probability…

The Cantor set?

Hello friends of the forum 🙂 I have a question about a set-theoretic topic in mathematics. It concerns the well-known Cantor set, which serves as the best-known example of a compact uncountable Lebesgue null set in R. The Cantor set is defined as the infinite countable intersection of the sets A_n, which is reflected by…