Posted by Alexus on September 7, 2006, at 1:31:17
In reply to Re: I think I figured it out! » curtm, posted by James K on September 6, 2006, at 14:28:32
> I hope your right, I was about to start typing them out, and I would have been pretty angry at myself about an hour into it.
> I always solve things the most literal way I can think of.Me too :-)
I was thinking of doing a truth table (that lists all the possibilities). Like this:1 2
P P
P A
A P
A A1= symptom 1
2= symptom 2
P= symptom is present
A= symptom is absentbut that is 4 rows (possibilities) for 2 symptoms.
with three symptoms it looks like this:1 2 3
P P P
P P A
P A P
P A A
A P P
A P A
A A P
A P Aso that is 8 rows for three variables.
so there would be 16 rows for four variables (is that right?)
and 32 rows for 5
and 64 rows for 6
and 128 rows for 7
and 256 rows for 8
and 512 rows for 9
(if i haven't stuffed up the addition)
i don't know if that is right...someone thought there would be 2 to the power of 9 rows on the truth table for 9 variables but i don't know what that is and if thats right...
then you would cross out the rows that have less than 5 P's on them. and what you are left with would be the answer :-)
but i don't have a big enough piece of paper (and i'm not sure on how big that piece of paper needs to be)
ak.
poster:Alexus
thread:683578
URL: http://www.dr-bob.org/babble/social/20060901/msgs/683871.html