21 Oct 12, 01:39AM
The implication works only one way. All natural numbers divisible by an odd prime are writeable in the desired form. But this doesn't imply that all other numbers aren't.
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Fun Maths Problem
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Fun Maths Problem - by Roflcopter - 20 Oct 12, 10:12PM
RE: Fun Maths Problem - by Enam - 20 Oct 12, 11:00PM
RE: Fun Maths Problem - by #M|A#Wolf - 20 Oct 12, 11:01PM
RE: Fun Maths Problem - by Roflcopter - 20 Oct 12, 11:11PM
RE: Fun Maths Problem - by Felix-The-Ghost - 21 Oct 12, 12:47AM
RE: Fun Maths Problem - by Roflcopter - 21 Oct 12, 01:28AM
RE: Fun Maths Problem - by Felix-The-Ghost - 21 Oct 12, 01:31AM
RE: Fun Maths Problem - by Roflcopter - 21 Oct 12, 01:39AM
RE: Fun Maths Problem - by Felix-The-Ghost - 21 Oct 12, 02:43AM
RE: Fun Maths Problem - by Roflcopter - 21 Oct 12, 04:31PM
RE: Fun Maths Problem - by Marti - 21 Oct 12, 01:04PM
RE: Fun Maths Problem - by MykeGregory - 21 Oct 12, 01:16PM
RE: Fun Maths Problem - by Xenon - 21 Oct 12, 02:31PM
RE: Fun Maths Problem - by Andrez - 21 Oct 12, 11:29PM
RE: Fun Maths Problem - by Link - 22 Oct 12, 02:16AM
RE: Fun Maths Problem - by Marti - 22 Oct 12, 12:02PM
RE: Fun Maths Problem - by Felix-The-Ghost - 23 Oct 12, 01:57AM
RE: Fun Maths Problem - by FleshyPod - 23 Oct 12, 05:30AM
RE: Fun Maths Problem - by #M|A#Wolf - 23 Oct 12, 05:48AM
RE: Fun Maths Problem - by FleshyPod - 23 Oct 12, 09:05PM
RE: Fun Maths Problem - by Oracle - 24 Oct 12, 12:47AM
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