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Old 09-06-2019, 10:12 AM
Ponderoid is offline
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Join Date: Jan 2008
Location: Off the Deep End
Posts: 712
C'mon, it's really easy. All decimals that terminate or endlessly repeat can be expressed as a fraction of two integers a/b. Just tell me what integers a and b result in the repeating expansion 0.99999999... and we're done.

Oh, and who's there?
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