IF command?

[cambam33]

I have an assignment due soon however i cannot the the IF command working,well im not even sure if thats the right function to be using. But basically i want a formula so that excel displays a primary contact according to some rules. e.g. if the street number,address,suburb and postcode are all non empty i want the primary contact column to display POST, however if any one of those fields is empty then i'd like it to look at another column, if that column is full primary contact will display phone, however if its not full id like it to display mail by checking different colums ETC. the formula i have now that won't work is

=IF(ISBLANK(F2:I2),"POST",IF(ISBLANK(K2:L2),"TELEPHONE",IF(ISBLANK(M2),"ELECTRONIC MAIL",IF(ISBLANK(F2:M2),"NONE"))))

Any help is appreciated

Thanks.

 

[Marcelo Branco]

Maybe

=IF(COUNTA(F2:I2)=4,"POST",IF(COUNTA(K2:L2)=2,"TELEPHONE",IF(COUNTA(M2)=1,"ELETRONIC MAIL","NONE")))

HTH

M.