AND() – Checks multiple conditions and returns a value if all are true

AND(condition1, condition2, ..., trueValue, falseValue)

• condition1, condition2, ...: Two or more logical expressions that can be evaluated as TRUE or FALSE (e.g., T1A1 > 10, T1B1 < 5).
• trueValue: The value that is returned if all of the specified conditions evaluate to TRUE.
• falseValue: The value that is returned if any one of the specified conditions evaluates to FALSE.

AND(T1A1 > 10, T1B1 < 5, "All True", "Not All True")

This example checks two conditions: if the value in cell T1A1 is greater than 10, AND if the value in cell T1B1 is less than 5.

• If T1A1 = 15 (true) and T1B1 = 3 (true), it returns "All True" (because both conditions are true).
• If T1A1 = 15 (true) and T1B1 = 10 (false), it returns "Not All True" (because T1B1 < 5 is false).
• If T1A1 = 5 (false) and T1B1 = 3 (true), it returns "Not All True" (because T1A1 > 10 is false).

Conditions use standard comparison operators:

• > (greater than)
• >= (greater than or equal to)
• < (less than)
• <= (less than or equal to)
• == (equal to)
• != (not equal to)

• Multiple condition evaluation: Allows checking several logical statements simultaneously.
• "All true" logic: Returns the trueValue only if every single one of the conditions is met.
• Built-in branching: Directly specifies the outcomes (trueValue, falseValue) within the function, much like an IF structure combined with AND logic.
• Variable number of conditions: Can accept multiple conditions before the trueValue and falseValue arguments.

• Confirming task completion: AND(SubTask1 == "Done", SubTask2 == "Done", SubTask3 == "Done", "Project Complete", "Project Incomplete").
• Checking if a candidate meets all requirements for a job: AND(experience > 5, degree == "Yes", "Qualified", "Not Qualified").
• Validating data entry where multiple fields must satisfy certain criteria: AND(ISNUMBER(T1A1 > 0, T1A1 <= 10, "Valid Input", "Invalid Input").

• Argument order: Ensuring all conditions are listed before the trueValue and falseValue arguments.
• Text values not in quotes: The trueValue and falseValue, if text, must be enclosed in double quotes.
• Confusing with OR logic: This function triggers trueValue only if all conditions are true. For "any true" logic, use the OR() function.
• Insufficient conditions: At least one condition must be provided before the true/false values. The MathGrid manual example shows two, suggesting a minimum of one is likely necessary.