Final answer:
Definition and examples of Sigma, Factorial, and Summation in mathematics.
Explanation:
Sigma: In mathematics, sigma (Σ) represents the sum of a series of numbers. For example, Σ(1, 2, 3) = 1 + 2 + 3 = 6.
Factorial: The factorial of a non-negative integer n, denoted as n!, is the product of all positive integers up to n. For instance, 5! = 5 x 4 x 3 x 2 x 1 = 120.
Summation: Summation is the process of adding values in a set or sequence. An example would be Σi=1 to 5 of i, which equals 1 + 2 + 3 + 4 + 5 = 15.
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