Manuals/calci/ISNUMBER

ISNUMBER(n)

• Failed to parse (MathML with SVG or PNG fallback (recommended for modern browsers and accessibility tools): Invalid response ("Math extension cannot connect to Restbase.") from server "https://wikimedia.org/api/rest_v1/":): {\displaystyle n} is the number

Description

• This function is one of the group in Failed to parse (MathML with SVG or PNG fallback (recommended for modern browsers and accessibility tools): Invalid response ("Math extension cannot connect to Restbase.") from server "https://wikimedia.org/api/rest_v1/":): {\displaystyle ISFUNCTIONS} .
• The Failed to parse (MathML with SVG or PNG fallback (recommended for modern browsers and accessibility tools): Invalid response ("Math extension cannot connect to Restbase.") from server "https://wikimedia.org/api/rest_v1/":): {\displaystyle IS FUNCTION} is also known as data information functions, data inspection functions or data-testing functions.
• Failed to parse (MathML with SVG or PNG fallback (recommended for modern browsers and accessibility tools): Invalid response ("Math extension cannot connect to Restbase.") from server "https://wikimedia.org/api/rest_v1/":): {\displaystyle ISNUMBER} is used to test given value is number or not.
• This function gives the result as TRUE when the given value is the number otherwise this function gives th result as FALSE.
• This function will not convert any numbers from text.
• For e.g. "20" is normally converted as a number 20. But in ISNUMBER("20") will return FALSE, because "20" will not convert in to number.

Examples

1. ISNUMBER(2)=TRUE
2. ISNUMBER(0)=TRUE
3. ISNUMBER(-100)=TRUE
4. ISNUMBER(y)=NULL
5. ISNUMBER($)=FALSE
6. ISNUMBER("17")=TRUE

See Also

• ISLOGICAL
• ISODD
• ISEVEN

References

Is functions