perplexus.info :: Just Math : Consecutive Numbers and Subset Choice

Consecutive Numbers and Subset Choice (Posted on 2016-02-09)

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.

See The Solution Submitted by K Sengupta

Rating: 4.0000 (2 votes)

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Subject	Author	Date
General Solution (from the first T numbers)	Steve Herman	2016-02-10 20:55:43
Just counting (spoiler)	Steve Herman	2016-02-10 19:49:00
possible (?) solution	Ady TZIDON	2016-02-09 21:27:48
found the error in method 2	Charlie	2016-02-09 16:29:47
on the other hand	Charlie	2016-02-09 16:15:26
2 computer solutions; the second is probably right	Charlie	2016-02-09 16:06:19

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