The ISNUMBER function checks to see if the contents of a cell is a number and returns TRUE or FALSE.

ISNUMBER takes 1 required argument and no optional arguments:

Syntax: ISNUMBER(value)

#1)
Using the ISNUMBER function:
#2)
The arguments for the ISNUMBER function are:
Argument Required? Description
value Required Value refers to a number.

Summary

The ISNUMBER function checks to see if the contents of a cell is a number.
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