Tag: Theorys

Probability Theory in Quantitative Finance Interviews: Part 2

The first approach is to consider the 13 different outcomes of the cards. To start, we know that there are four suits of cards, hearts, diamonds, spades, and clubs. In each suit, there are 13 cards, ranging from 2 to A. Therefore, each card has 1/13 probability. Let’s say you get a card with a...

Flattening a 4-D Cube onto Your Desk with Graph Theory

The applicability of graph theory in the context of web2.0 is obvious, with websites like Facebook (undirected graph of friendships) and Twitter (directed graph of followings) built around them. Another obvious application is in computer networks. The field of operations research, which started with...