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Check out this informative video tutorial from Apple on how to create formulas with Quick Formula in Numbers '09. iWork '09, the office productivity suite from Apple, is the easiest way to create documents, spreadsheets, and presentations. Writing and page layouts are easy in Pages. Numbers gives you simple ways to make sense of your data.
To enter an array formula, press CTRL+SHIFT+ENTER. Use the COUNTIF() function to count the occurrences of a text string. For example, use the formula. where. is the range of cells that you are evaluating, and. is the text string that you want to count instances of (note that. must be enclosed in quotation marks).s the number that you want to count. NOTE: This formula must be entered as an array formula. To enter an array formula, press CTRL+SHIFT+ENTER. Use this formula. where. is the range that you want to search, and. is the text that you want to find (the text must be enclosed in quotation marks).