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### Course: Breakthrough Junior Challenge > Unit 2

Lesson 1: 2018 Challenge — Mathematics# Markov chains

By Samuel Cryan.

Markov Chains are a fascinating mathematical trick that is able to find meaning in large clumps of disorganized data. Watch and learn what the heck Markov Chains are, and how Google uses them to rank the webpages out there.

Markov Chains are a fascinating mathematical trick that is able to find meaning in large clumps of disorganized data. Watch and learn what the heck Markov Chains are, and how Google uses them to rank the webpages out there.

## Want to join the conversation?

- So based on the idea that the link that is most clicked will be further to the front of a web search, is there the possibility that the pages you are looking at in the first few pages of Google may not actually be the best sources of information on the given topic and that those sources may exist on page 40 or 50 because it is not heavily advertised as something connected to your search?(3 votes)