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What Are Functions?

Functions are complex ready-madeformulas that perform a series of operations on a specified range of values. For example, to determine the sum of a series of numbers in cells A1 through H1, you can enter the function =SUM(A1:H1) instead of entering =A1+B1+C1 and so on. Functions can use range references (such as B1:B3), range names (such as SALES), or numerical values (such as 585.86).

Every function consists of the following three elements:


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