Check the bulb in the attic...?

Question

There is a light in the attic on the 3rd floor. The switch, however, is on the first floor. (Yes, the electrician's incompetent.) The switch panel contains 3 switches. How do you determine which is the correct light switch without sending anyone else to the attic and only making 1 trip yourself?

Will update with the answer if no one gets it soon...

Answer 1

IDK.... can you please post the answer?? :-)

Answer 2

Hook the building up with CCTV on every floor and then switch them?

Answer 3

Flip all three then turn off the two that turns something else on.

Edited:  

I'd like to change my answer to what you said please !

Answer 4

You should already know which light is which, cause you own the fu@#$% house.