should prove case m=3 as the first step of mathematics induction

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• Thanks,though it is trivial. -jinjing- ♀ (0 bytes) () 02/07/2015 postreply 08:08:36

• 望不吝赐教。之所以好奇，是因为整个证明与LCM无关。太神了。 -wxcfan123- ♂ (0 bytes) () 02/07/2015 postreply 10:38:56