If formula to return 0 when same and 1 when different

Hi Experts using excel 2010

I havethe following if formula...

IF(BB19=BA19,0,IF(BC19=BB19,0,IF(BD19=BC19,0,IF(BE19=BD19,0,IF(BF19=BE19,0,1)))))
 
Which should when the previous date is the same as current date return 0 and when different return 1...cannot get it to work. Keeps on returning 0 all the time.
route217JuniorAsked:
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Subodh Tiwari (Neeraj)Excel & VBA ExpertCommented:
Maybe this...

=IF(OR(BB19=BA19,BC19=BB19,BD19=BC19,BE19=BD19,BF19=BE19),0,1)

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ProfessorJimJamMicrosoft Excel ExpertCommented:
can u upload a sample file.  the reason you get zero is that in all nested IFS the condition for true is 0 so that would mean that any of these BB19=BA19 BC19=BB19 BD19=BC19 BF19=BE19 are returning true meaning that any of these equal statement are true and therefore it will not reach to the end.
Subodh Tiwari (Neeraj)Excel & VBA ExpertCommented:
Another way....
=IF(SUMPRODUCT(COUNTIF(BA19:BE19,BA19:BE19))=5,1,0)

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route217JuniorAuthor Commented:
Firstly thanks for the feed back still get a zero.

So.assume row 1
Date 1        Date 2        Date 3       Date 4
Rows 2
01/02/16   02/02/16    02/02/16   03/02/16
Hence end result should be 2 date 1 and 2 are different and 3 and 4..
ProfessorJimJamMicrosoft Excel ExpertCommented:
please see attached.  the result does show 1
Book1.xlsx

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route217JuniorAuthor Commented:
Apologies projimjam..

End result should be 2 hence two date differences. My fault.. sorry.
ProfessorJimJamMicrosoft Excel ExpertCommented:
please see attached.
Book1.xlsx
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