Yahoo Answers: Answers and Comments for Discrete math help!!!? [Mathematics]
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From dposters
enUS
Mon, 19 Nov 2007 06:43:09 +0000
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Yahoo Answers: Answers and Comments for Discrete math help!!!? [Mathematics]
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https://answers.yahoo.com/question/index?qid=20071119064309AAhjDUL
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From moshi747: The sum of all 3 consecutive numbers is
3(1+2...
https://answers.yahoo.com/question/index?qid=20071119064309AAhjDUL
https://answers.yahoo.com/question/index?qid=20071119064309AAhjDUL
Mon, 19 Nov 2007 07:00:27 +0000
The sum of all 3 consecutive numbers is
3(1+2+3+...+10)=165
Since there are 10 different 3 consecutive numbers, if each of them were at most 16, then the sum of all 3 consecutive numbers would be at most
10*16=160
Since this is lower than the sum that we're supposed to get, there must be at least one(rather more than one) 3 consecutive numbers whose sum is at least 17.