Algorithms are a sequence of well-defined instructions that computers can implement in order to solve a problem by performing operations like calculation, data processing, automated reasoning, and so on.
Machine Learning uses algorithms to process data in order to extract patterns depending on the applications. These algorithms help in receiving as well as analyzing the data for future predictions of the business. The machines use algorithms in order to learn and improve performance based on the data set received in the past.
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You should also watch this video tutorial in Machine Learning to get a head start in your career: