Have Some Fun With Brain - Xls Download

i have solved it in 2 minutes ...i am an HR.
don't underestimate your profession.
some common sense should have been used before posting this ... that if you are not aware of the signs then how are you supposed to solve it.
If i post some accounts related problem and engineer can never solve it...

I am an ACCOUNTANT and i found the Answer in less than - 20 Minutes.
So Dont Mention again that who can do and who cant do.
Answer is 13

I am Dell Process Trainer for L&D team. I have found this password in less than 13mns. Clue is in my message. Have Fun :)