Avoiding #N/A

[Heather]

I would like to fix an input screen that prices out a product once selected
but when they clear their selection it puts a #n/a in the cell

the formula in Cell B13 is
=(B27*B28*B29)

Below once cleared
B27 = #N/A

so I want Cell B13 to be blank not #N/A when they don't have a selection
picked, can I do that?

 

[Jacob Skaria]

Use ISNA() to handle this

=IF(ISNA(formula),"",formula)

If this post helps click Yes

 

[Sean Timmons]

=if(isna(B27*B28*B29),"",(B27*B28*B29))

 

[T. Valko]

Try this:

=IF(COUNT(B27),PRODUCT(B27:B29),"")

 

[Dave Peterson]

One more:

=if(count(b27:b29)<>3,"not enough numbers",b27*b28*b29)
or
=if(count(b27:b29)<>3,"",b27*b28*b29)