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Use AND and OR to test a combination of conditions
This formula nests the AND function inside the OR function to search for units sold between April 1, 2011 and January 1, 2012, or any units sold by Nancy. You can see it returns True for units sold by Nancy, and also for units sold by Tim and Ed during the dates specified in the formula.
Using IF with AND, OR, and NOT functions in Excel
Technical Details. Here are overviews of how to structure AND, OR and NOT functions individually. When you combine each one of them with an IF statement, they read like this: AND – =IF (AND (Something is True, Something else is True), Value if True, Value if False)