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                Logical Functions for Array Formulas 
                Excel provides the AND and OR functions to allow you to specify multiple conditions in a Formula or IF statement. 
                But Excel’s AND/OR functions evaluate all of the given arguments/parameters and return a single TRUE/FALSE answer. This makes them difficult to use in array formulas where you usually require a column, row or array of True/False answers. 
                SpeedTools provides a family of array-formula friendly AND/OR functions: 
                  
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