say something.

來源: jinjing 於 2011-04-04 21:17:14 [] [舊帖] [給我悄悄話] 閱讀數 : (147 bytes)
回答: any better way to solve it? 由 calligraphy 於 2011-04-04 12:16:45

...n+1=5*2t.the n's last number is 9...try only 7^2*31 ok.This kind Q,most cases no solution,but we can us s to find new Q, let n+s=m(....).

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