[seqfan] Re: need help with query

[Richard Mathar]

ks> Date: Wed, 13 May 2009 06:18:27 -0700 (PDT)
ks> From: Kathy Suchanek <ksuchanek at yahoo.com>
ks> Subject: what is the number for ?
ks> 
ks> This should be in a chart like tic tac toe.
ks>    
ks>    
ks> 7    4    8
ks>    
ks> 3    9    7
ks>    
ks> 6    5    10
ks>    
ks> ?    8    4

One interpretation: value in the 3rd column equals product of the values
in the first two columns minus 20:

7*4=28-20=8
3*9=27-20=7
6*5=30-20=10

which gives ?=3 because
3*8=24-20=4