OR

Returns TRUE if any argument is TRUE; returns FALSE if all arguments are FALSE.

Syntax

OR(logical1,logical2,...)

Logical1,logical2,... are 1 to 30 conditions you want to test that can be either TRUE or FALSE.

Remarks

The arguments must evaluate to logical values such as TRUE or FALSE, or in arrays or references that contain logical values.
If an array or reference argument contains text or empty cells, those values are ignored.
If the specified range contains no logical values, OR returns the #VALUE! error value.
You can use an OR array formula to see if a value occurs in an array. To enter an array formula, press CTRL+SHIFT+ENTER.

Example

The example may be easier to understand if you copy it to a blank worksheet.

How?

Create a blank workbook or worksheet.
Select the example in the Help topic. Do not select the row or column headers.

Selecting an example from Help
Press CTRL+C.
In the worksheet, select cell A1, and press CTRL+V.
To switch between viewing the results and viewing the formulas that return the results, press CTRL+` (grave accent), or on the Tools menu, point to Formula Auditing, and then click Formula Auditing Mode.

A	B
Formula	Description (Result)
=OR(TRUE)	One argument is TRUE (TRUE)
=OR(1+1=1,2+2=5)	All arguments evaluate to FALSE (FALSE)
=OR(TRUE,FALSE,TRUE)	At least one argument is TRUE (TRUE)