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Consecutive Numbers and Subset Choice (Posted on 2016-02-09) Difficulty: 3 of 5
M is the number of six-element subsets that can be chosen from the set of the first 15 positive integers so that at least three of the six numbers are consecutive.
Find M.

No Solution Yet Submitted by K Sengupta    
Rating: 3.0000 (1 votes)

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  Subject Author Date
General Solution (from the first T numbers)Steve Herman2016-02-10 20:55:43
SolutionJust counting (spoiler)Steve Herman2016-02-10 19:49:00
Solutionpossible (?) solutionAdy TZIDON2016-02-09 21:27:48
found the error in method 2Charlie2016-02-09 16:29:47
Solutionon the other handCharlie2016-02-09 16:15:26
Some Thoughts2 computer solutions; the second is probably rightCharlie2016-02-09 16:06:19
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