MS Excel is a useful software. There are many useful tools in MS Excel. If want to know the details about MS Excel, you need almost one year. Mathmatical formulas and executing functions are unique features of MS Excel. A formula is a set of mathematical informations. The can be used in Microsoft Excel to perform calculations. A formula usually consists of an operand and operator. Formulas are typed in the cell of the worksheet or in the formula box with '=' sign in front. A formula can contain a set of values, cell references, functions, given with or without an operator.

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