Summary  
This chapter covers constructing compound logical tests by combining multiple conditions with AND and OR functions and nesting them within IF statements to evaluate complex criteria.  

General domain of usage  
Data validation in spreadsheets

Using the `AND` and `OR` allows you to perform more **sophisticated logical tests** by combining **multiple conditions**. 

Task Template

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## Key Points

- Use the `AND` **function** to test if **all** conditions are met like this: `=AND(condition1, condition2,...)`;
- Use the `OR` **function** to test if **at least one** condition is met like this: `=OR(condition1, condition2, ...)`.

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Combining AND & OR in Excel

Key Points