Summer is here and some days are more rainy than others. What to do? What to do? Take three of your friends (why not one of yours best friends and two 'enemies') and play a bridge game, for example the…

## Combinatorics and probability

I think that one of the most beautiful branches of mathematics is discrete mathematic, and here I would emphasize the combinatorics and probability theory. Background Introduction Counting How many they are? Factorial Permutations Combinations Probability Background While I was…

## Poker probability

Have you ever wondered what are the chances that you get a quads (four of a kind) when playing poker? Well, that depends on how many cards the hand has because there are several poker variants, right? These kind of…