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russotto · 08-11-2002, 02:26 PM

All the possible answers are the same symbol. There's only 9 possible answers to

10j + k - j - k ( = 9j)

where j is from 1 to 9.

08-11-2002, 02:26 PM	#2
russotto Professor Join Date: Jan 2001 Posts: 1,788	Re: How does this work? All the possible answers are the same symbol. There's only 9 possible answers to 10j + k - j - k ( = 9j) where j is from 1 to 9.