[理工] 離散數學問題
1.Let m positive odd number. Prove that such that m|2^n-1,
where n is positive integer.
2.Let S be a subet of {1,2,....,3n} having size 2n+1.Prove
that S must contain three consecutive numbers.
用鴿籠用到卡住了,麻煩高手賜教謝謝
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◆ From: 59.117.174.23
※ 編輯: james1815 來自: 59.117.174.23 (04/05 22:31)
推
04/05 22:44, , 1F
04/05 22:44, 1F
→
04/05 22:45, , 2F
04/05 22:45, 2F
※ 編輯: james1815 來自: 59.117.174.23 (04/05 22:49)
※ 編輯: james1815 來自: 59.117.174.23 (04/05 22:50)
→
04/05 22:53, , 3F
04/05 22:53, 3F
推
04/05 23:09, , 4F
04/05 23:09, 4F
推
04/06 08:07, , 5F
04/06 08:07, 5F
→
04/06 08:08, , 6F
04/06 08:08, 6F
推
04/07 00:13, , 7F
04/07 00:13, 7F