Difference between revisions of "1964 IMO Problems/Problem 1"
(Created page with '== Problem == (a) Find all positive integers <math>n</math> for which <math>2^n-1</math> is divisible by <math>7</math>. (b) Prove that there is no positive integer <math>n</mat…') |
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Revision as of 19:16, 15 July 2009
Problem
(a) Find all positive integers for which
is divisible by
.
(b) Prove that there is no positive integer for which
is divisible by
.