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Instructor: Welcome back everyone.
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In this section of the course,
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we are going to examine combinatorics
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and how it relates to probability.
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For starters, combinatorics deals with combinations
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of objects from a specific finite set.
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In addition, we will also consider certain restrictions
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that can be applied to form combinations.
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These restrictions can be in terms
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of repetition, order, or a different criterion.
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We will explore the three integral parts of combinatorics,
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permutations, variations, and combinations.
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Then we will use each of these parts
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to determine the number of favorable outcomes
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or the number of all elements in a sample space.
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In a previous lecture,
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we talked about the likelihood of winning the lottery
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without explaining the whole computational process.
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By the end of this section,
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you will be able to perform such calculations on your own.
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Okay, let's not waste any more time.
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Continue to the next lecture and let's get started.
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