Difference between revisions of "1983 IMO Problems/Problem 3"
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Revision as of 21:30, 31 January 2016
Let ,
and
be positive integers, no two of which have a common divisor greater than
. Show that $2abc − ab − bc − ca$ (Error compiling LaTeX. Unknown error_msg) is the largest integer which cannot be expressed in the form
,where
,
and
are non-negative integers